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miss Akunina [59]
3 years ago
15

each of these four organisms began life as a single 2N cell. Cells in each organisms divided and differentiated. Probably the si

ngle most important process that ensured genetic continuity in all four organisms was DNAA) alliteration.B) replication.C) transcription.D) translation.
Biology
1 answer:
pochemuha3 years ago
7 0

Answer:

DNA replication

Explanation:

DNA is the genetic material and serves to store genetic information. The genetic information is transmitted from a parent cell to the daughter cells or from the parent to the progeny by the process of DNA replication.  

DNA replication is the process that occurs in the nucleus in eukaryotes and includes the synthesis of new DNA strands using the existing DNA strands as a template. The newly formed DNA molecules are then distributed among the daughter cells during cell division. Thereby, the process of DNA replication ensures that the DNA of the parent generation is carried to the next generation.

For instance, sperms and egg cells in humans carry the DNA of male and female parents respectively to the young one. DNA replication occurs in sperm mother cells and egg mother cells during the formation of sperms and egg cells respectively.  

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In a population, surrounded with dark gray rocks, there lived 2 types of beetles, a gray beetle and a white beetle. In the start
Svetlanka [38]

Directional selection favors one of the extreme phenotypes over the other one. <u>Option C is correct</u>. Natural selection is the evolutive force, and 0.40, 0.40, and 0.20 are the new genotypic frequencies.

<h3>What is directional selection?</h3>

Directional selection is one type of natural selection. Let us remember that natural selection is an evolutive force.

Directional selection increases the proportion of individuals with an extreme phenotypic trait.

There must be a selective pressure or environmental pressure acting on populations to lead the species to increase the number of individuals expressing that extreme phenotype.

This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.

In the exposed example,

  • two original phenotypes ⇒ gray and white
  • substrate color ⇒  dark gray rocks
  • environmental pressure ⇒ birds preying on beetles

- Grey beetles managed to camouflage with rocks since their gray color was similar.

- White beetles were exposed on the dark gray rocks, so they were easily seen by birds.

- Predation by birds was an environmental pressure that had a stronger influence on the white phenotype.

Natural selection favored gray-colored beetles, who could survive and reproduce.

Assuming a diallelic gene expressing complete dominance codes for beetles color, we can suggest that the frequency of one of the homozygous genotypes increased, while the other decreased to near cero. Heterozygous individuals kept the allele coding for the white phenotype.

Among the options, <u>C is the correct one</u>. Natural selection is the evolutive force, and 0.40, 0.40, and 0.20 are the new genotypic frequencies.

You can learn more about natural selection and  directional selection at

brainly.com/question/9830102

brainly.com/question/12226774

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7 0
2 years ago
Which of these activities requires the use of a material resource?
xxMikexx [17]

Answer:

I think its manufacuting steel Have a great day

Explanation:

4 0
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The correlation between thirst and kidney function is the following:

Thirst is the regulator of the state of hydration, necessary to eliminate the osmotic load, it can help preserve kidney function.

The instantaneous perception of osmolarity in the blood allows us to generate the sensation of thirst.

In other words, this sensation is in turn caused by a high concentration of osmolytes (compounds that affect osmosis, or the way it is measured, osmolality or osmolarity) or by hypovolemia.

The receptors that control cellular dehydration are called osmoreceptors and are located in the lateral preoptic area.

Osmoreceptors detect this decrease in cellular water and trigger thirst, as well as the release of Anti-Diuretic Hormone into the bloodstream.

Antidiuretic hormone helps regulate the amount of water in the body by controlling the amount of water excreted by the kidneys.

Therefore, we can conclude that the sensation of thirst appears the sodium concentration is higher than normal, when drinking water, the concentration gradient is reduced, which allows the normal functioning of kidney function.

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What do cooked mice, roasted parrots, and salted jellyfish have in common?
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In your case, they're all animals that were used to make dishes.


Hope it helped,

Happy homework/ study/ exam!
4 0
2 years ago
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The differences in traits among all of your monsters are due to differences in the dna code. What is the source of these differe
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Mutation is the source of differences in the dna code.

What is Mutation?

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  • Somatic mutations (which happen in body cells) cannot be passed on to offspring, whereas germline mutations (which happen in eggs and sperm) can.
  • Damaged DNA can change by base pair replacement, deletion, or insertion. The majority of the time, mutations are benign, unless they result in tumor growth or cell death. Cells have developed systems for repairing damaged DNA due to the deadly potential of DNA mutations.

Learn more about the DNA Mutation with the help of the given link:

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