phenylketonuria (pku) is a disease in humans that results from the abnormal metabolism of the amino acid phenylalanine. if untreated, it can lead to severe brain damage in infants. two normal parents have a child who has pku. what can you determine about the inheritance of the pku allele from this information? group of answer choices it is epistatic. it is dominant. it is pleiotropic. it is recessive.

By using Punnett squares we can get genotypic and phenotypic frequencies. 1) a- 0% of the progeny has cystic fibrosis. b- Ron is FF c- Nancy is Ff. 2) if the affection was dominant, both parents and the whole progeny would have cystic fibrosis.

The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.

Punnett square shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.

In the exposed example, cystic fibrosis is a recessive disorder. FF and Ff codes for the normal phenotype, and ff codes for the affection.

1) Cross: Ron with NancyParentals) FF x FfGametes) F  F   F  fPunnett square) F   F                       F  FF  FF                       f   Ff   FfF

1) 50% of the progeny is expected to be homozygous dominant     50% of the progeny is expected to be heterozygous     100% of the progeny is expected not to express the affection on: FFNancy: Ff

2) If the affection was dominant, then both parents and the whole progeny would have cystic fibrosis since al of them carry at least one dominant allele, which wouls be the one coding for the affection.

Differences between recessive and dominant disordersDominant disorder are coded by the dominant allele and are always seen in every generation that carry the gene.

The recessive disorder is coded by the recessive allele and is not always seen in every generation that carry the gene.

Homozygous dominant and heterozygous individuals are affected if the disorder is dominant

Homozygous recessive individuals are affected if the disorder is recessive

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The ways in which a biome is from the equator is if it is characterized by a warmer and wetter climate.

This is referred to as the weather conditions of an area in general over a long period of time and it is dependent on various types of factors.

Biome which are from the equator are warmer and wetter because the moisture content of warmer air is greater than that of cooler air. They form the world's tropical forests in which regions such as Central and South America possess half of it thereby making it the correct choice.

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An allele is :  one of several forms of a gene.

The gene is considered the simple unit of inheritance. Genes are surpassed from dad and mom to offspring and contain the information needed to specify bodily and biological trends. Maximum genes code for unique proteins, or segments of proteins, which have differing capabilities in the body.

Genes bring instructions that tell your cells how to paintings and develop. Cells are the constructing blocks of the frame. Every a part of your body is made from billions of cells working collectively. Genes are organized in systems called chromosomes.

A big quantity of gene sorts and genetic versions exist, so permit's break down 5 foremost styles of genes in a comprehensive way.

1) Complementary Genes.

2) Supplementary Genes.

3) Replica Genes.

4) Polymeric Genes.

5) Intercourse-connected Genes.

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The change that does not happen in the maternal body during pregnancy among the options provided is A. Increased hematocrit. Hematocrit refers to the proportion of red blood cells in the blood. During pregnancy, there is an increase in plasma volume which causes a relative decrease in hematocrit levels, leading to a dilutional effect.

On the other hand, B. Increased cardiac output, C. Increased glomerular filtration rate, and D. Increased respiration rate are all physiological changes that occur during pregnancy. Cardiac output increases to meet the increased blood flow demand for the growing fetus and placenta.

Glomerular filtration rate increases due to the increased renal blood flow, which helps in the efficient removal of waste products from the mother and fetus. Lastly, the respiration rate increases to fulfill the increased oxygen demands of both the mother and the developing baby. Hence, A is the correct option.

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I believe that a disease that destroys half of the population would be more difficult to survive than the disease that targets organisms with similar traits because with sexual reproduction, there will be differences in genetics. If the population reproduced asexually, then that disease would be more effective.

(Sorry if answer is wrong)

Answer:

Explanation:

1) We exploit natural resources to our fullest extent. For example, we perform deforestation to get raw products for manufacturing stuff. Deforestation can lead to wide array of problems like soil erosion, landslides, and even extinction of animal species.

2) We pollute, like a LOT! Look up plastic islands in ocean or microplastics found in fish or even some mammals. We dump stuff into ocean which can not only pollute the water but also kill marine life.

3) We burn fossil fuels which releases gases that trap heat in earth's atmosphere and result in global warming.

4) the list goes on and on and on and on......

A mutation in the C3 gene that results in a nonfunctional C3 protein is the most likely cause of the child's disease, contributing to recurrent bacterial infections due to compromised immune function.

Recurrent bacterial infections are often associated with a compromised immune system, which can be caused by genetic mutations or other immune-related conditions. In this particular case, the most likely cause of the child's disease is a mutation in the C3 gene that leads to a nonfunctional C3 protein.

The C3 protein is an integral component of the complement system, a crucial part of the immune system responsible for eliminating foreign pathogens from the body. Upon encountering bacteria or other microbes, C3 is activated and triggers a series of events that result in the destruction of the invading pathogens.

A mutation in the C3 gene that disrupts the function of the C3 protein would hinder the proper functioning of the complement system. As a result, the body would struggle to effectively eliminate bacterial infections and other harmful pathogens.

On the other hand, a mutation in C3 that increases the rate of spontaneous cleavage into C3b and C3a would not cause recurrent bacterial infections but rather contribute to a kidney disease called C3 glomerulopathy.

Mutations in endosomal Toll-like receptors (TLRs) that either cause constitutive homodimerization or prevent homodimerization would not directly lead to recurrent bacterial infections. Instead, these mutations would affect the immune system's ability to recognize and respond to microbial invaders.

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Answer:

ubalanced chemical equation for photosynthesis

Answer:

40⁰C because the enzyme activity peaks at that temperature

Based on the DNA sequence, the species that is most closely related to the unknown species is species 1, as it has more homologies than species 2. A bigger distance can be traduced in a higher number of mutations or modifications in the DNA sequence.

The correct answer is: Species 1.

One depth cue that can be classified as both a binocular cue and an oculomotor cue is convergence.

Convergence is a depth cue that can be classified as both a binocular cue and an oculomotor cue.

Convergence refers to the inward movement of the eyes when focusing on nearby objects. When an object is closer, the eyes converge more, and when it is farther away, they converge less. This convergence provides the brain with information about the depth and distance of the object.

As a binocular cue, convergence relies on the use of both eyes and the disparity between the images received by each eye. The brain processes the differences in the angle of convergence to perceive depth and create a three-dimensional representation of the visual scene.

Additionally, convergence serves as an oculomotor cue because it involves the coordination of eye movements and the adjustment of the eye muscles to focus on objects at different distances.

The brain utilizes the feedback from the oculomotor system to estimate depth and accurately perceive the spatial relationships between objects. Depth cues play a fundamental role in our perception of the three-dimensional world around us.

By understanding how various cues, such as convergence, contribute to depth perception, researchers can unravel the complexities of visual processing. Exploring these cues and their interplay enhances our knowledge of human vision, virtual reality technology, and fields such as optometry and neuroscience.

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Answer:

It can decrease or increase the number of organisms in a population.

Explanation:

If there is little or no food for a population of organisms, the population will decrease, and if there is a lot of food the population will increase.

Hope this helps :)

Answer: Food is a limiting factor, just like water, shelter, space, and mate, amongst others,  that can have a significant impact on the overall population seeing as if there is not enough food resource for all organisms and basic needs are not met, then the population decreases.

Answer:

      Carbon is the foundation of all life on Earth, required to form complex molecules like proteins and DNA. Carbon helps to regulate the Earth's temperature, makes all life possible, is a key ingredient in the food that sustains us, and provides a major source of the energy to fuel our global economy. The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Since our planet and its atmosphere form a closed environment, the amount of carbon in this system does not change. Where the carbon is located in the atmosphere or on Earth is constantly in flux.

       On Earth, most carbon is stored in rocks and sediments, while the rest is located in the ocean, atmosphere, and in living organisms. Carbon is released back into the atmosphere when organisms die, volcanoes erupt, fires blaze, fossil fuels are burned, and through a variety of other mechanisms. In the case of the ocean, carbon is continually exchanged between the ocean's surface waters and the atmosphere, or is stored for long periods of time in the ocean depths. Humans play a major role in the carbon cycle through activities such as the burning of fossil fuels or land development. As a result, the amount of carbon dioxide in the atmosphere is rapidly rising; it is already considerably greater than at any time in the last 800,000 years.

Brainlist Pls!

Answer:

Its mitochondria

Explanation:

Hope his helps

Answer: B. Lysosomes. They help with cellular respiration as they clear out unwanted materials or waste.Photosynthesis is to chloroplasts as cellular respiration is to mitochondria. Chloroplasts are the part of a plant that contain chlorophyll and make...

hope this helps have a nice night❤️

Explanation:

Answer:

The author thought this because e-skin might hold promise for use in soft, wearable hearing aids. Unlike conventional aids, soft devices are more comfortable because they mold to human skin. When the ear receives sound vibrations, there are hair cells in the cochlea that vibrate and translate the sounds into electrical signals. These electrical signals are transmitted to the auditory nerve, which transmits the information to the brain.

Answer:

Sound is one of the five major senses. The nervous system carries sound signals from sensory receptors to the brain. E-skin has many sensory receptors that can carry signals toward the brain, enabling us to react to sounds. Because e-skin is soft, scientists can use it to make effective hearing aids that are quite comfortable to wear.

Explanation:

do not copy it, this is the exact answer from Edmentum

(this means it right)

The visual cliff is an experimental apparatus used to test depth perception in infants.

The apparatus consists of a clear glass surface that is elevated several feet off the ground and has a checkerboard pattern on the surface. One side of the glass surface appears to be a shallow surface, while the other side appears to be a steep drop-off.

Infants who are exposed to the visual cliff typically show some hesitation or reluctance to crawl or walk over the apparent "cliff" side of the apparatus. This suggests that they are able to perceive the difference in depth between the two sides of the visual cliff and are able to use this information to guide their behavior.

Research on the visual cliff has shown that depth perception is present in human infants as young as six months old.

However, it is important to note that infants' depth perception abilities continue to develop throughout infancy and early childhood, and are influenced by various factors such as experience, context, and individual differences.

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Answer:

The magnitude of the concentration gradient depends on the membrane permeability. The concentration gradient changes the available surface area. It is suggested that a high-permeability compound is absorbed mainly from the top of the villi, while a low-permeability

Explanation:

The endergonic reactions of the cell are proceeded by their coupling with the ATP hydrolysis.

Endergonic means the reactions that requires the input of energy for them to proceed. In these reactions, the free energy is positive. Thus, the Gibb's free energy is said to be positive. Most of the reactions inside the living organisms is endergonic, for example photosynthesis.

ATP hydrolysis is the break down of the phosphate group attached by phospho-anhydride bonds from the triphosphates of adenosine. This breakdown releases very high amounts of energy which can be used to drive some other processes of the living organisms.

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Answer:

B. cladogram

Explanation:

"A cladogram is a diagram used to represent a hypothetical relationship between groups of animals, called a phylogeny. A cladogram is used by a scientist studying phylogenetic systematics to visualize the groups of organisms being compared, how they are related, and their most common ancestors."

The image above represents a cladogram.

A cladogram is an evolutionary tree that diagrams the traditional connections among organisms.

A cladogram is a type of chart that shows theoretical relationships between classes of organisms.

A cladogram compares a tree, with branches off the main trunk. Key elements of a cladogram are the root, clades, and nodes. The root is an initial progenitor that is familiar to all groups branching off from it.

Thus, a cladogram is an evolutionary tree that diagrams the traditional connections among organisms.

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During interphase the cell cycle, the cell grows and replicates both its organelles and its chromosomes.

Cell organelles are the sub-cellular components that work in order to keep the cell functional and alive. These reside in the cytoplasm of the cell. The various cell organelles are nucleus, mitochondria, lysosomes, chloroplast, endoplasmic reticulum, etc.

Chromosomes are the most compact form of genetic material. It is comprised of the DNA and histone proteins. Each chromosome consists of two sister chromatids joined together at the centromere. This is the form of DNA which is inherited from parents to offspring during the cell division.

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Gregor Mendel’s research formed the basis of the field of genetics which incolves dominance traits, recessive traits, and selective breeding. Therefore, the correct statement is option A, option B, and option C.

Gregor Mendel was an Austrian monk considered as the father of genetics. He conducted experiments on pea plants to study and discovered that traits are inherited in a predictable pattern and some traits are dominant, while some traits are recessive. He coined the terms dominant and recessive to describe these traits.

Mendel's experiments involved crossing pea plants with different traits, such as tall or short height and then observed the traits of the offspring.  He gave principles of dominant and recessive traits, as well as the law of segregation and independent assortment to explain the inheritance of traits.  

His work laid the foundation for modern genetics and helps to understand genetic inheritance, selective breeding, and evolution. Mendel also worked area of selective breeding, which is the process of choosing specific traits to breed for in plants and animals.

Therefore, the research of Gregor Mendel formed the basis of the field of genetics which involves dominance traits, recessive traits, and selective breeding.

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Answer:

D. cells come only from other living cells.

Explanation:

The cell theory states that all cells come from prexisting cells. They are found in ALL living things, not most. all cells have membranes and only certain plant cells capture energy from sunlight.

Answer:

d. cells come only from other living cells.

Explanation:

took test :)

Answer:

it is called structurel and functional unit of life because it control all activities of your body

The umbilical cord structure consists of two arteries and one vein. Thus, the statement that accurately describes the structure of the umbilical cord is: It comprises two arteries and one vein.

The umbilical cord is a tube-like structure that connects a developing fetus to the placenta. It transports nutrients, oxygen, and waste products between the fetus and placenta. Additionally, it helps to sustain the pregnancy.

The umbilical cord consists of three components, including two arteries and one vein, surrounded by a gelatinous substance called Wharton’s jelly. The arteries in the umbilical cord carry blood with carbon dioxide and other waste products from the fetus to the placenta, while the vein carries nutrient-rich and oxygenated blood from the placenta to the fetus.

In summary, the structure of the umbilical cord comprises two arteries and one vein, surrounded by Wharton’s jelly, that transport nutrients, oxygen, and waste products between the fetus and placenta.

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The event that describes an occurrence of evolution is the allele frequency for brown fur in rabbits increasing.

Evolution is defined as a change in the heritable characteristics of a population over successive generations. This change is driven by genetic variation, natural selection, and other mechanisms. In the given options, the only event that directly involves a change in allele frequency is the increase in the allele frequency for brown fur in rabbits.

Allele frequency refers to the proportion of a specific allele in a population. If the frequency of the brown fur allele increases over time, it indicates that more individuals in the population possess the brown fur allele than other fur color alleles. This change in allele frequency can result from natural selection favoring individuals with brown fur in their environment, leading to an increase in the prevalence of that trait within the population.

The other events mentioned, such as animal reproduction, hibernation, bird mating, and habitat return, may be necessary for the survival and behavior of species but do not directly involve changes in allele frequency, which is a crucial component of evolution.

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When the environmental lapse rate is less than the wet adiabatic rate, precipitation occurs.

The environmental lapse rate refers to the rate at which temperature decreases with increasing altitude in the Earth's atmosphere, while the wet adiabatic rate refers to the rate at which saturated air cools as it rises and expands due to decreasing atmospheric pressure.

When the environmental lapse rate is less than the wet adiabatic rate, it means that the air is stable and tends to resist vertical motion.

As a result, when air is forced to rise, it cools at a slower rate than the wet adiabatic rate, which can lead to the formation of clouds and eventually precipitation as water vapor condenses and falls back to the ground.

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Answer:

Skeletal

Explanation:

Your bones hold everything together, and help support your body. Also your muscles are attached to your bones. If i'm wrong i'm sorry