The life cycle of animals

2 answers:

4 0

First birth then growth, reproduction and then death.

These are the 4 factors that take place in the circle of life of an animal

faltersainse [42]3 years ago

3 0

Answer:

The four stages of the animal life cycle are birth, growth, reproduction and lastly, death. All these animal species go through these stages, however, they manifest differently throughout the animal kingdom.

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PLEASE HELP ILL GIVE BRAINLIEST

Finger [1]

Answer:

Purpose: Meiosis is a special version of cell division that occurs only in the testes and ovaries; the organs that produce the male and female reproductive cells; the sperm and eggs. ... Therefore the purpose of meiosis is to produce gametes, the sperm, and eggs, with half of the genetic complement of the parent cells.

Genetic variability is a measure of the tendency of individual genotypes in a population to vary (become different) from one another. Variability is different from genetic diversity, which is the amount of variation seen in a particular population.

Meiosis generates genetic diversity through a process called crossing over which allows new combinations of variations to appear in gene pool. ... Chiasmatal points appear randomly on homologous chromosomes, hence amount of genetic material exchanged in every case/cell could be different.

Explanation:

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3 years ago

Which of these is a characteristic of body cells that require large amounts of energy?

Vitek1552 [10]

Answer:They have a large number of mitochondria.

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3 years ago

The following question is based on the observation that several dozen different proteins comprise the prokaryotic flagellum and

Artyom0805 [142]

Correct option is C. This evidence supports the claim that natural selection can produce new structures by coupling together parts of other structures.

<h3>How are gene variants involved in evolution?</h3>

Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes. Genetic variations can arise from genetic variations (also called mutations) or from a normal process in which genetic material is rearranged as the cell is about to divide (known as genetic recombination).

Genetic variations that alter gene activity or protein function can introduce different traits into an organism. If a trait is beneficial and helps the individual survive and reproduce, the genetic variation is more likely to be passed on to the next generation (a process known as natural selection).

Over time, as generations of individuals with the trait continue to reproduce, the favorable trait becomes more and more common in a population, making that population different from the ancestral population. Sometimes the population becomes so distinct that it is considered a new species.

To learn more about evolution from given link

brainly.com/question/4207376

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2 years ago

What type of cell helps to stimulate b cells to produce antibodies?

valentinak56 [21]

The correct answer is helper T cells.
The helper T cells are one of the main cells of the adaptive immune system. Their role is to help the activity of other immune cells by releasing T cell cytokines and they are required for almost all adaptive immune responses. The helper T cells activate B cells to secrete antibodies, stimulate macrophages to destroy ingested pathogens, and help in activation of cytotoxic T cells to kill infected target cells.

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3 years ago

Gene expression is the process whereby genetic information in the cell is used to produce proteins. this is referred to as the c

leonid [27]

you had some missing info...BUT, you are in luck, because I just took that test a few days ago.
Here is your answer:
A.The molecule that carries information from the DNA specifying a polypeptide to ribosomes.
B. The synthesis of an RNA copy of a gene.
C. The synthesis of a specific sequence of amino acids on a ribosome.
D. A molecule found in the nucleus of cell that contains the cell's genome.
E. A molecule made of amino acids that correspond to the genetic information in a structural gene.

A. mRNA
B.Transcription
C.Translation
D.DNA
E.Polypeptide

8 0

3 years ago