What organism exhibits complete genetic linkage, meaning there is no recombination between homologous chromosomes?.
Answers
Drosophilamales exhibit complete genetic linkage. Two genes, A and X, exhibit incomplete linkage.
A complete genetic linkage is one where there is no crossing over between the linked genes. Recombination is the exchange of genetic material between homologous chromosomes, resulting in new combinations of alleles. The phenomenon of complete genetic linkage is demonstrated by bacteria, particularly those of the genus Bacillus, and by certain fungi, such as Neurospora crassa, a common bread mold.
This is because these organisms reproduce asexually and have only one chromosome, which makes recombination between homologous chromosomes impossible. In contrast, most higher organisms, including plants and animals, exhibit partial genetic linkage.
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Related Questions
What would be the products of a digestion with EcoRI and EagI? Show your calculations.
Answers
The products of digestion with EcoRI and EagI depend on the presence of the specific recognition sites in the DNA molecule, and the length and number of the fragments produced will vary depending on the location of these sites.
Digestion is a process that breaks down large, complex molecules into smaller, more manageable parts. In the context of molecular biology, digestion refers to the cutting of DNA molecules into smaller fragments using restriction enzymes. These enzymes act as molecular scissors that recognize specific sequences of DNA and cut the molecule at those sites.
EcoRI and EagI are two commonly used restriction enzymes that have different recognition sites on DNA. EcoRI recognizes the sequence 5'GAATTC3' and cuts the DNA molecule between the G and A nucleotides. EagI recognizes the sequence 5'CCWGG3' and cuts the DNA molecule between the two G nucleotides.
Given a hypothetical DNA sequence of 10 base pairs, let's calculate the products of digestion with EcoRI and EagI.
For EcoRI:The recognition site for EcoRI is 5'GAATTC3', so we need to search for this sequence in our hypothetical DNA sequence.If the recognition site is found in the DNA sequence, EcoRI will cut the molecule between the G and A nucleotides, creating two fragments with different lengths.For example, if the recognition site is found at positions 3 to 8 in our hypothetical DNA sequence, the two fragments produced by the digestion would be:Fragment 1: 1-2 + 9-10
Fragment 2: 3-8
For EagI:The recognition site for EagI is 5'CCWGG3', so we need to search for this sequence in our hypothetical DNA sequence.If the recognition site is found in the DNA sequence, EagI will cut the molecule between the two G nucleotides, creating two fragments with different lengths.For example, if the recognition site is found at positions 4 to 9 in our hypothetical DNA sequence, the two fragments produced by the digestion would be:Fragment 1: 1-3
Fragment 2: 4-9 + 10
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Which of the following is an example of Active Transport?
A. Facilitated Diffusion
B. Osmosis
C. Diffusion
D. None of the Above
Answers
Answer:A
Explanation: Because it moves molecules with and across the concentration gradients
Answer:
i think its diffusion because i remember taking a test on this like 2 days ago and putting A but it said it was wrong and said it was c. so uh yuh
Explanation:
Most of Earth’s oxygen comes from the rain forest?
Answers
Answer:
Of the many important reasons to worry about the thousands of fires raging in the world’s largest rainforest, oxygen supply is not one of them.
Explanation:
l think this the answer
Answer:
hope this helps u pls mark me brainlist
Explanation:
s well as the vivid beauty that comes with great diversity in plants and animals, rainforests AAalso play a practical role in keeping our planet healthy.
By absorbing carbon dioxide and releasing the oxygen that we depend on for our survival. The absorption of this CO2 also helps to stabilize the Earth's climate.
Rainforests also help to maintain the world's water cycle by adding water to the atmosphere through the process of transpiration which creates clouds. Water generated in rainforests travel around the world; scientists think that moisture generated in the forests of Africa ends up falling as rain in the Americas!
1. Which systems (2) are primarily responsible for movement of the body
Answers
Answer:
The correct answer is -muscular system and skeletal system.
Explanation:
The skeletal system and the muscular system work together to move the body or body parts. Different types of tissues form the muscular system that and their action on bones controls the movement of the body in vertebrates.
Tendons are tough muscles that attach with the bones and joints allow the movement by contraction of muscle that helps in moving bones from joint. Muscle normally acts by contracting and relaxing in pairs.
Some people like to read books, while others like to watch or play sports. Clearly, everyone prefers some activities over others. Why do you think this is? Consider choices you make concerning your own entertainment. Why do you like to do the things you do? Why does it feel good to you to do them while they might not appeal as much to someone else? Do genetics play a part in your decisions?
Answers
The reasons why we enjoy certain leisure activities are complex and multifaceted. It is important to remember that there is no right or wrong way to spend one's free time, and we should embrace and celebrate our individual differences and preferences.
It is natural for people to have different preferences when it comes to their leisure activities. Some individuals may find enjoyment and fulfillment in reading books, while others may prefer watching or playing sports. These preferences can be shaped by a variety of factors such as personal experiences, cultural background, and individual temperament.
For me personally, I enjoy spending my free time reading books because it provides me with an opportunity to relax, learn new things, and escape from the stresses of daily life. However, these reasons may not resonate with someone who prefers a more active form of entertainment like sports.
Genetics may also play a role in our leisure activity preferences. For example, studies have shown that certain personality traits, such as extraversion and openness to experience, are partially influenced by genetics and may influence our attraction to certain activities.
Ultimately, the reasons why we enjoy certain leisure activities are complex and multifaceted. It is important to remember that there is no right or wrong way to spend one's free time, and we should embrace and celebrate our individual differences and preferences.
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Seeds can only be germinated in a presence of favorable condition
Answers
Answer:
All seeds need water, oxygen, and proper temperature in order to germinate. Some seeds require proper light also. Some germinate better in full light while others require darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat.
What evidence would support a scientist's claim that a certain gene is responsible for holding the instructions to produce a specific protein?
Answers
Answer:
Test/experiments
Explanation:
The growing solid waste problem is characterized by:
a. Increasing amounts of MSW
b. Increasing costs of tipping fees
c. Filling up and closing landfills in some areas of the U.S.
d. More garbage produced by developing countries
e. All of the above
Answers
The growing solid waste problem is characterized by: Increasing amounts of MSW, Increasing costs of tipping fees, Filling up and closing landfills in some areas of the U.S., More garbage produced by developing countries. The correct option is e.
The growing solid waste problem is characterized by all of the above factors:a. Increasing amounts of MSW: Municipal Solid Waste (MSW) refers to the waste generated by households, commercial establishments, and institutions. The solid waste problem is characterized by a continuous increase in the volume of MSW produced over time. This is a result of population growth, urbanization, and changes in consumption patterns.
b. Increasing costs of tipping fees: Tipping fees are charges imposed on waste disposal facilities, such as landfills or incinerators, for accepting and disposing of waste. As the volume of waste increases, the demand for waste disposal capacity also rises, leading to higher tipping fees. The growing solid waste problem is accompanied by increasing costs associated with waste disposal.
c. Filling up and closing landfills in some areas of the U.S.: Landfills are commonly used for the disposal of solid waste. However, due to the growing amounts of waste generated, many landfills are reaching their capacity and are being filled up. In some areas, land scarcity or environmental concerns may lead to the closure of landfills, exacerbating the solid waste problem and necessitating alternative waste management strategies.
d. More garbage produced by developing countries: Rapid economic development and population growth in developing countries often result in increased levels of consumption and waste generation. These countries may face challenges in implementing effective waste management systems, leading to higher quantities of garbage. This adds to the global solid waste problem, as waste management infrastructure and practices may be insufficient to handle the growing waste volumes.
These factors collectively contribute to the escalating solid waste problem, posing environmental, health, and economic challenges. To address this issue, sustainable waste management practices, such as waste reduction, recycling, composting, and the development of alternative disposal methods, are being emphasized to minimize the environmental impact of solid waste and promote resource conservation.
Thus, the correct option is e. All of the above.
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Which of the following materials could contain blood borne pathogens?
1) Blood saliva
2) Semen
3) Vaginal secretions
4) All of these
Answers
Answer:
4)All of these
Explanation:
All of the listed materials, namely blood, saliva, semen, and vaginal secretions, have the potential to contain bloodborne pathogens. Bloodborne pathogens are microorganisms, such as viruses or bacteria, that can be present in blood and can be transmitted through contact with infected bodily fluids. Therefore, it is important to handle and dispose of these materials properly to minimize the risk of transmission of bloodborne diseases.
Answer: All of the above.
Explanation:
Bloodborne pathogens like HBV and HIV can be transmitted through infected human blood and other potentially infectious body fluids.
When studying with a friend for a test, what key points about osmosis would you make sure you tell them? Check all that apply.
a. Osmosis refers to the movement of water along a concentration gradient
b. In osmosis, water moves to equalize solute concentrations on either side of the membrane
c. If osmosis occurs across a membrane, then diffusion is not occurring
d. The movement of water across a membrane can affect the turgor pressure of some cells
Answers
Osmosis is the process by which the movement of water occurs along the concentration gradient, hence options A, B, and D are correct.
What is osmosis?It is the process in which the movement of solvent occurs from a low concentration of solute to a high concentration of solute through a semipermeable membrane.
In osmosis, water moves to balance solute concentrations on either side of the membrane and it also affects the turgor pressure of some cells.
Therefore, water moves to balance solute concentrations, and the effect on the turgor pressure of some cells is observed during osmosis.
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Why did my fish drown
Answers
Answer:
you forgot to feed it
Explanation:
Answer:
It wasn’t meant to be
Explanation:
55 POINTS!! My mouse has perineal swelling but I am sure she js a girl because of her private distance. She has a baby bump and her and my male have attsmpted multiple times. She is constantly cleaning. Im very concerned though, she has bled from her area and it looks prolapsed, or could she end up being a male(I am so sorry for discomfort) I am just very worried for my Nalia baby. She has had increased appetite and is building little places to lay more often, and keeping the place extremely clean (she refuses to use the bathroom in the spot), but usually she wouldnt care. She keeps cleaning her area constantly before digging deeper into her layout.
Answers
It sounds like the mouse may have a prolapsed uterus or a vaginal infection. It is important to see veterinarian for proper diagnosis and treatment.
What should be done if female mouse has perineal swelling?As the female mouse is experiencing perineal swelling, bleeding and a possible prolapse. All these symptoms may indicate a serious medical issue.
It is important to take her to a veterinarian who specializes in exotic pets as soon as possible. They will diagnose the problem and provide proper treatment which can include antibiotics or surgery. There is need to make sure she has a clean and comfortable environment and try to minimize stressors as much as possible.
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How are l actic acid formation and alcohol fermentation different from each other?
Answers
Answer:
alcohol fermentation is done from sugar while lactic acid is fermented from all kinds of chemicals
A teacher divides her class into four groups. She assigns
each group the task of measuring the volume of a liquid in
a container three times. The teacher already knows that
the volume is 18 mL.
Based on the results from each group, which group makes the most precise
measurements of the liquid's volume?
A. Group A: 17.9 mL, 19.1 ml, 21.0 mL
B. Group B: 18.5 mL, 18.0 mL, 17.8 mL
OC. Group C: 19.1 mL, 19.0 mL, 17.0 mL
D. Group D: 20.0 mL, 20.1 mL, 19.9 mL
Answers
Answer:
Group D
Explanation:
Precision is how close the measurements are to each other
Which of the following treatment options do NOT apply to people suffering from sickle cell anemia?
Vitamin supplement
Blood transfusions
take penicillin
breathing treats that add moisture and medicine to the lungs
Answers
Answer:
breathing treats that add moisture and medicine to the lungs
Explanation:
CAN SOMEONE PLEASE HELP ME??
Answers
Answer:
D
Explanation:
I don't have time to explain but trust me lol
Which is a non-Mendelian trait?
A. A trait controlled by many genes
B. A trait with a clearly dominant form
C. A trait controlled by one gene
D. A trait with two alleles
Answers
Answer:
The answer would be A.
Explanation:
Non-Mendelian traits are traits that are not passed down with dominant and recessive alleles from one gene. Examples of polygenic traits are hair color and height. ... Other traits, such as blood type, show codominance, where there is no dominant or recessive allele.
A non-Mendelian trait would be a trait that is controlled by many genes. The right option would be A.
Mendelian traits are traits that obey the principles of the Mendelian laws While non-Mendelian traits simply do not conform with the principles and laws of Mendel.
A trait that is Mendelian would have the following:
Show simple dominance or recessive formControlled by a single geneEach gene must have 2 alleles. The 2 alleles can be the same (homzygous) or different (heterozygous).Thus, a trait that is controlled by many genes is clearly a non-Mendelian trait.
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According to the article, ______ are important because they enable scientists to discover and learn about ecological patterns.
a. long-term, large scale studies b.short term, local experiments c.complicated genetic experiments
d. observational studies
Answers
The sentence can be with options long-term, large-scale studies short-term, local experiments. Therefore, the correct options are A and B.
Patterns in ecology can be classified at many biological levels. From species to populations, communities to ecosystems, and so on. Even at the most basic levels of physiology (organs) and creature behavior, patterns have a scale, activate ecological processes, and connect occurrences across seasons.
The given blank of the statement can be completed as:
According to the article, long-term, large-scale studies and short-term, local experiments are important because they enable scientists to discover and learn about ecological patterns.
The reason for these are:
A.) long-term, large-scale studies:
Long-term research gives essential information that short-term studies cannot supply. These investigations allow scientists to study and explore ecological research.
B.) short term, local experiments:
Because of the dramatic decline in kelp forests, bald eagles have been observed shifting their diet from fish to seabirds and other mammals. According to biologists, they have evolved into opportunistic foragers, consuming anything they can in order to live.
Hence, the correct options are A and B.
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Which homeostatic process moves particles against a concentration gradient?
dynamic equilibrium
passive transport
osmosis
active transport
Answers
Answer:
Yes, the correct answers is D: active transport
Explanation:
got it right in edg 2020
hope this is of help :)
Answer:
D it’s the answer
Explanation:
Cellular respiration use sugar and _______ to make ATP,_________ and ______
Help
Answers
how does gene flow exactly pertain to change in gene frequency
Answers
Hopefully this helps.
The history of Earth is represented on which scale?
Hutton scale
Steno scale
geological time scale
Mercator scale
Answers
Answer:
The history of Earth is represented on the geological time scale.
which of these is found on the surface of an antigen-presenting cell (apc)?A. CD1 B. CD8. C. MHC I or MHC II.D. immunoglobulin.
Answers
A. CD1 and C. MHC II are found on the surface of an antigen-presenting cell (APC).
What molecules are present on an antigen-presenting cell APC's surface?Antigen-presenting cells (APCs) play a crucial role in the immune response by capturing, processing, and presenting antigens to T cells. These cells express specific molecules on their surface that facilitate antigen presentation. Among these molecules, CD1 and major histocompatibility complex class II (MHC II) are prominently found on the surface of APCs.
CD1 molecules are a family of glycoproteins that are responsible for presenting lipid and glycolipid antigens to specific T cells, such as CD1-restricted T cells. They play a crucial role in immune surveillance against bacterial, fungal, and parasitic infections.
On the other hand, MHC II molecules are involved in presenting peptide antigens derived from extracellular pathogens to CD4+ T cells, also known as helper T cells. MHC II molecules are constitutively expressed on professional APCs like dendritic cells, macrophages, and B cells.
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Please help me with my science homework please
Answers
That’s the only one I know but sorry
which layer of the eye is indicated by letter a? which layer of the eye is indicated by letter a? vascular neural fibrous
Answers
The cornea is a fibrous layer of clear tissue that covers the anterior part of the eye and is continuous with the white of the eye as indicated by the letter a.
The cornea, which is the clear front part of the eye, shields the iris, pupil, and anterior chamber. The anterior portion of the eye is covered by the cornea, a fibrous layer of clear tissue that is continuous with the white of the eye. Around two-thirds of the eye's total optical output is refracted light, which is reflected by the cornea, anterior chamber, and lens. In humans, the cornea has a refractive power of approximately 43 dioptres. The cornea can be changed by surgical procedures like LASIK. Although the focus is fixed, much of the eye's focusing power comes from the cornea. It is possible to accommodate the focus of light to enhance the ability to see close things by changing the lens' shape.
The complete question is:
From the given image which layer of the eye is indicated by the letter a?
(A) vascular
(B) neural
(C) fibrous
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where are the lymphatic vessels located in the digestive system
Answers
The lymphatic vessels in the digestive system are called lacteals, and they are located in the villi of the small intestine.
The lymphatic vessels are present in the digestive system, and they help in the absorption of lipids and other nutrients. The lacteals are tiny lymphatic vessels present in the intestinal lining. They are important in the absorption of fats and fat-soluble vitamins from the small intestine.
The lymphatic system helps to transport nutrients and waste products around the body, and it also plays a role in the immune system by carrying white blood cells throughout the body.
In conclusion, the lymphatic vessels in the digestive system are located in the villi of the small intestine. These vessels are called lacteals and they play an important role in the absorption of fats and other nutrients.
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What is the name for a group of individuals of the same species living
together in the same area at the same time?
A. Growth
ОО
B. Population
C. Resources
D. Animals
Answers
Answer:
population is the right answer.
help pls Its due in 16 hours
Answers
Answer:
what is the question? please let me know
After the transformation experiment, what plates should be transformed? Select all that apply. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a LB-DNA b LB/amp-DNA с LB/amp+DNA d LB/amp/ara+DNA
Answers
After the transformation experiment, the plates that should be transformed are b) LB/amp-DNA and c) LB/amp+DNA.
This is because the transformation experiment involves the transfer of DNA into a host cell, and these plates contain the necessary components for the transformed cells to grow and be selected for.
The LB/amp-DNA plate contains both the LB broth, which provides nutrients for the cells, and the antibiotic ampicillin, which will select for cells that have taken up the DNA and are resistant to the antibiotic.
The LB/amp+DNA plate also contains these components, as well as additional DNA that can be taken up by the cells.
The LB-DNA and LB/amp/ara+DNA plates do not contain the necessary components for the transformed cells to grow and be selected for, and therefore should not be used in the transformation experiment.
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What is the difference between the structure of the atrioventricular valves and the semilunar valves? What is the function of each type of valve?
Answers
The function of the iris diaphragm is to control the amount of light that passes through the specimen on the microscope slide.
By adjusting the size of the opening, the user can adjust the brightness and contrast of the image. The substage condenser is responsible for focusing the light from the microscope's light source onto the specimen. It also helps to concentrate the light and direct it towards the specimen, which improves the quality of the image that is produced. Overall, both the iris diaphragm and the substage condenser play important roles in ensuring that microscope images are clear and well-illuminated.
The function of the iris diaphragm is to regulate the amount of light entering the microscope by adjusting the size of the aperture. This helps in optimizing the contrast and resolution of the observed specimen.
The function of the substage condenser, on the other hand, is to focus and direct the light from the light source onto the specimen. It improves the quality of the illumination, ensuring a sharper and more evenly lit image.
In summary:
1. Iris diaphragm: Regulates light entering the microscope.
2. Substage condenser: Focuses and directs light onto the specimen for better illumination.
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