The ability of a microbe to move into host tissues is its?

Answer:

A sister chromatid refers to the identical copies (chromatids) formed by DNA replication of a chromosome, with both copies joined by a common centromere.

Explanation:

Homologous chromosomes may or may not be the same as each other because they are derived from different parents.

In a cross between a tall plant and a short plant resulting in 45 tall plants and 55 short plants in the F1 generation, the genotypes of the two plants in the P generation can be deduced as heterozygous tall (Tt) and homozygous short (tt).

The observed phenotypic ratio of 45 tall plants to 55 short plants in the F1 generation suggests a 3:1 ratio, which is a typical Mendelian inheritance pattern for a monohybrid cross involving a dominant and recessive trait. In this case, tallness (T) is the dominant trait, and shortness (t) is the recessive trait.

Considering the phenotypic ratio, it can be inferred that the parent plants in the P generation had different genotypes. Since the tall phenotype appeared in the F1 generation, it indicates that one of the parents must have been heterozygous for the tallness trait (Tt), carrying one dominant allele (T) and one recessive allele (t). This genotype allows the plant to display the tall phenotype.

On the other hand, the presence of only the short phenotype (55 short plants) in the F1 generation suggests that the other parent must have been homozygous for the shortness trait (tt), carrying two recessive alleles (t) and lacking the dominant allele (T) responsible for tallness.

Therefore, the genotypes of the two plants in the P generation can be concluded as heterozygous tall (Tt) and homozygous short (tt).

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Answer:

true

Explanation:

Answer:

False

Explanation:

Australia began to separate from Antarctica 85 million years ago.

Organic molecules that uncouple the electron transport chain from atp synthesis have properties hydrophobic & hydrophilic.

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A low fat milk exchange typically contains around 12 grams of carbohydrates.

A low fat milk exchange typically contains about 12 grams of carbohydrates per serving. This is because milk naturally contains a type of sugar called lactose, which contributes to the carbohydrate content. However, the exact amount may vary slightly depending on the brand and type of milk. Choosing low fat milk can be a good option for those looking to limit their fat intake, while still getting the essential nutrients found in milk, such as calcium, vitamin D, and protein. It's important to keep in mind that individuals with lactose intolerance may need to choose lactose-free milk options.

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because they have similiar genes? The modern organism were same species as them in the past, i think they just evolve

They share genetic traits. The current organisms were once members of the same species as them. It is believed they just evolved.

A species is considered extinct when there are no longer any surviving examples of it anywhere on the planet. This can happen with both plants and animals. An organic byproduct of evolution is this. However, sometimes extinctions happen far more fast than usual. The primary contemporary causes of extinction include habitat destruction and loss, mostly due to deforestation, overexploitation via overhunting and overfishing, invasive species, climate change, and nitrogen pollution.

When there are no longer any living members of a certain animal or plant species anywhere in the globe, the species has become extinct. This is an organic byproduct of evolution.

Thus, They share genetic traits. The current organisms were once members of the same species as them.

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Answer: This should be the answer :)

Explanation:

sorry my screenshot is blurry

To make a 20 lb mixture of candy that sells for $6/b, the Candyman should use a combination of gumballs and Peppermint Patty's. The number of pounds of gumballs (g) and Peppermint Patty's (p) can be determined using a system of equations,  will give us the values of g and p, representing the pounds of gumballs and Peppermint Patty's, respectively, in the 20 lb mixture.

Let's assume the Candyman uses g pounds of gumballs and p pounds of Peppermint Patty's. Since the grocer wants to make a 20 lb mixture, we have the equation g + p = 20.

The cost of the gumballs is $5 per pound, so the cost of the gumballs in the mixture is 5g dollars. Similarly, the cost of the Peppermint Patty's is $8 per pound, so the cost of the Peppermint Patty's in the mixture is 8p dollars. The grocer wants the mixture to sell for $6 per pound, so the total cost of the mixture is 6 * 20 = 120 dollars.

We can now set up the second equation: 5g + 8p = 120.

Solving this system of equations will give us the values of g and p, representing the pounds of gumballs and Peppermint Patty's, respectively, in the 20 lb mixture.

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The study titled "Impact of Rural and Urban Environmental Microbial Exposure on Intestinal Microbiota in Early Infancy" examines how the microbial exposure in rural and urban environments affects the composition of the intestinal microbiota in early infancy.

The study investigates the differences in microbial exposure between rural and urban environments and their impact on the development of the intestinal microbiota during early infancy. It explores how environmental factors such as living conditions, hygiene practices, and exposure to diverse microbial communities in rural and urban settings influence the colonization and diversity of the gut microbiota in infants. The findings shed light on the role of environmental microbial exposure in shaping the early gut microbiota composition and provide insights into the potential effects of urbanization and rural living on infant gut health. Understanding these influences can contribute to strategies aimed at promoting a healthy gut microbiota and overall well-being in early infancy.

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Answer:

c:3 d:16 e:12 m:8 h:13 p:4

Answer:

</3 sorry i found this too late

Explanation:

hope you are doing well in science :)

Answer:

they adapted to their environment, some have sharper beaks which are used to crack nuts, when they were introduced to the new environment they evolve to the new surroundings in order to survive. therefore, seeing as though there is 13 different species, the Galapagos islands have many different food sources, and ecosystems.  

Explanation:

Answer:

mitochondria

Explanation:

Based on the given information, the most likely impact of the mutation in the mutated sequence is that the protein formed will not be the same as that formed from the original DNA sequence.

The mutation involves a change in the nucleotide sequence, indicated by the presence of an extra nucleotide in the mutated sequence. This alteration in the DNA sequence can cause a shift in the reading frame during protein synthesis, leading to a different sequence of codons and ultimately resulting in a different amino acid sequence.

As a result, the protein formed from the mutated DNA will have a different composition and structure compared to the protein formed from the original DNA sequence. Therefore, the most likely impact of the mutation is a change in the protein formed.

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If the human genome has 3.2 billion base pairs of DNA, about  5,120,000 times will the following restriction sites be present .

To find that the how many times will the following restriction sites be present then we must first calculate the frequency of the each type if base.It is given that the AT base pairs consist 60% of the DNA, then we deduce that the frequency of A is 0.3 and frequency of T is 0.3. The GC base pairs must consist of 40% of the DNA; therefore, the frequency of G is 0.2 and the frequency of C is 0.2.

a. BamH1 GGATCC is then (0.2)(0.2)(0.3)(0.3)(0.2)(0.2) = 0.000144

3,200,000,000(0.000144) = 460,800 times

b. EcoRI GAATTC = (0.2)(0.3)(0.3)(0.3)(0.3)(0.2) = 0.000324 3,200,000,000(0.000324) = 1,036,800 times

c. HaeIII GGCC = (0.2)(0.2)(0.2)(0.2) = 0.0016 3,200,000,000(0.0016) = 5,120,000 times.

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During the Cretaceous period, high temperatures and abundant vegetation resulted in increased \(CO_2\) levels, leading to the accumulation of organic matter and the formation of good source rocks for oil and gas.

During the Cretaceous period, spanning from approximately 145 to 66 million years ago, the global carbon-climate cycle played a crucial role in the development of favorable conditions for the formation of good source rocks. The period was characterized by high global temperatures and abundant vegetation, resulting in increased carbon dioxide \((CO_2)\) levels in the atmosphere.

The elevated \(CO_2\) levels fueled vigorous photosynthesis, leading to the accumulation of organic matter in marine and terrestrial ecosystems. As this organic matter was buried and subjected to heat and pressure over millions of years, it transformed into oil and gas, creating potential source rocks. The warm climate and prolific vegetation during the Cretaceous, along with the subsequent geological processes, contributed to the formation of the rich hydrocarbon reserves that are vital to our energy resources today.

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The correct question is:

Explain the global carbon-climate cycle during the Cretaceous period. (Write only one paragraph describing what happened during the Cretaceous geological period in order to have good source rocks.)

Answer:

Integumentary System: acts as a barrier to protect the body from the outside world (ie. skin, hair, and nails)

Circulatory System: carries oxygen and nutrients to cells, carries waste away from cells (ie. heart and blood vessels (veins and arteries))

Digestive System: converts food into molecules that can be used by cells (ie. mouth, esophagus, stomach, small intestine, large intestine)

Respiratory System: provides oxygen to the blood and removes carbon dioxide from the body  (ie. nose, mouth, pharynx (throat), trachea, and lungs)

Immune System: fights off illness and disease  (ie. lymph nodes, white blood cells, and spleen)

Muscular System: allows for movement  (ie. cardiac muscles, skeletal muscles, and smooth muscles)

Nervous System: coordinates all body functions, sends signals to and from all parts of the body  (ie. brain, spinal cord, and neurons)

Skeletal System: support the body, protect internal organs, store minerals  (ie. bones and joints)

Answer:

Evolution

Explanation:

Habitat evolution refers to the way plant life at a given site changes over time.

Answer:

1.check your BMI. 2.get a measuring tape. 3.get a body scale.

Explanation:

Sana maka tulong

Answer:

Charles Darwin

Explanation:

Answer:

Hey mate.....

Explanation:

This is ur answer....

Charles Darwin is more famous than his contemporary Alfred Russel Wallace who also developed the theory of evolution by natural selection. scientist who studies living organisms.

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Brainliest pls!

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Answer:

DNA Testing

Explanation:

Investigators are considering using hair evidence at an upcoming trial. What is TRUE about using two pieces of hair evidence in a criminal trial? The only way to prove a match of two distinct samples is to use DNA testing. Using hair evidence is the easiest way to determine if a suspect was at a crime scene.

When adding a single antibiotic-resistant bacterium to a population of bacteria, the structure of the cell membrane in the resistant bacterium would likely have fewer or no pores compared to other variations in the population.

This structure would give the resistant bacterium a competitive advantage because it would prevent or limit the entry of antibiotics into the cell.

Pores in the cell membrane allow substances, including antibiotics, to pass through. In the simulation mentioned, different-colored bacteria had different numbers of pores in their cell membranes. Bacteria with fewer or no pores would be less susceptible to antibiotic entry, making them resistant.

When an antibiotic is introduced, it would be unable to effectively penetrate the cell membrane of the resistant bacterium, allowing it to survive and reproduce, while other bacteria without this resistance may be killed by the antibiotic. This gives the antibiotic-resistant bacterium a competitive advantage over other variations in the population.

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Answer:

c

Explanation:

did yesterday got it right

Answer:

A monohybrid cross is defined as the cross happening in the F1 generation offspring of parents differing in one trait only. A dihybrid cross is a cross happens F1 generation offspring of differing in two traits.

Explanation:

This is correct.

The ability of bluefin tuna to produce 10 million eggs per year can increase their fitness in several ways. the correct answer is b) It increases the chances that a fraction of the offspring will survive into adulthood.

Producing a large number of eggs can also increase the genetic diversity of the population, which can be beneficial for the species long-term survival. This genetic diversity arises from the higher probability of meiosis generating desirable traits in a larger pool of potential offspring.

One of the main advantages is that it increases the probability that at least some of the offspring will survive to adulthood, as there are more opportunities for the eggs to be fertilized and develop into viable embryos.

Therefore, the answer is B).

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A phylogenetic tree represents the evolutionary history of a group of organisms. It is used to depict the evolutionary relationships between organisms, including the time of divergence, common ancestors, and evolutionary innovations or adaptations.

A phylogeny is composed of branches and nodes, where the branches represent the lineages of organisms and the nodes represent the points of divergence or speciation. Here are the following statements that are accurate with regard to a phylogeny,

as represented by a phylogenetic tree:

Members of the same clade likely share many derived characters. This statement is true because a clade refers to a group of organisms that share a common ancestor, and all of its descendants. Therefore, members of the same clade are likely to share many derived characters because they are closely related and have evolved from a common ancestor. Shared ancestral characters are excellent traits to use in developing a phylogeny.

This statement is false because the ancestral group may not have all the derived characters of the descendant species. Derived characters are traits that have evolved in a lineage after it has diverged from its common ancestor, so they are unique to a particular group of organisms. Therefore, the ancestral group may have some of the derived characters of the descendant species, but not all of them.

In conclusion, the accurate statements regarding a phylogenetic tree include that members of the same clade likely share many derived characters and shared ancestral characters are excellent traits to use in developing a phylogeny.

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It is the most well-known current on Earth and moves more water than the Amazon River. The worldwide ocean conveyor, a system of currents that links the world's oceans, includes the Gulf Stream as just one component. The Gulf Stream and other warm surface currents are driven by wind and tide in tropical waters.

A phenomenon known as the "thermohaline circulation" or "Atlantic Meridional Overturning Circulation" includes the Gulf Stream, albeit in a minor capacity. This is a huge ocean conveyor belt that runs over the entire planet and is propelled by variations in water density and salt content.

These deep, underwater currents are propelled by a process known as thermohaline circulation, also known as the ocean conveyor belt. Circulation of thermohaline. A large movement of water that travels from the northern oceans to the southern oceans and back again is called the thermohaline circulation.

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Answer:

First, enzymes read the information in a DNA molecule and transcribe it into an intermediary molecule called messenger ribonucleic acid, or mRNA. Next, the information contained in the mRNA molecule is translated into the "language" of amino acids, which are the building blocks of proteins.

In transcription, the information in the DNA of every cell is converted into small, portable RNA messages. During translation, these messages travel from where the DNA is in the cell nucleus to the ribosomes where they are 'read' to make specific proteins.

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Answer:

Explanation:

The process of converting genetic information stored in DNA into functional proteins that can be used by cells is known as gene expression. This process is composed of several steps:

Transcription: The first step in gene expression is the transfer of genetic information from DNA to RNA. This is accomplished through the process of transcription, where an enzyme called RNA polymerase reads the DNA code and synthesizes a complementary RNA molecule. This RNA molecule is called messenger RNA (mRNA).

Splicing: Before the mRNA molecule is transported out of the nucleus, it may undergo a process called splicing. This process involves the removal of non-coding sequences of the mRNA molecule, leaving only the coding sequence, called exons.

Translation: After the mRNA molecule has been processed and is in the cytoplasm, it is translated into a protein by ribosomes. The ribosome reads the sequence of codons (groups of three nucleotides) in the mRNA molecule and uses this information to assemble a chain of amino acids. The amino acids are linked together through peptide bonds to form a functional protein.

Post-translational modification: Once the protein is produced, it may undergo further modification, such as folding into its final 3D shape or modification by the addition of chemical groups. These modifications are important for the proper functioning of the protein.

In summary, gene expression is the process by which the genetic information stored in DNA is transcribed into mRNA, processed, and then translated into functional proteins in the cytoplasm. These proteins carry out the functions that are essential for the survival and functioning of cells.

Answer:

An inference is a conclusion you get based on evidence or reasoning.