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2 years ago

I need help with this question somebody answer!!

Biology

1 answer:

a_sh-v [17]2 years ago

6 0

Answer:

The essential factor to increase the number of cells in a growing organism is that each and every cell has a complete copy of DNA.

Explanation:

The development and growth of an organism is based on the multiplication of its tissue cells. Cell multiplication in somatic cells occurs through mitosis, a process that allows obtaining<u> two identical daughter cells from a progenitor cell</u>.

DNA contains all the genetic information belonging to a living organism. In the process of mitosis, the DNA of each cell must be replicated so that each daughter cell has a complete copy of the original DNA. This ensures that each cell resulting from mitosis has the same structure and function as the original cell.

The other options are not correct because:

<em>The </em><u><em>size of the cell is important</em></u><em>, since each cell has defined characteristics, according to the tissue it must form. </em>
<u><em>Each and every cell needs to have a complete DNA</em></u><em>. </em>
<em>In somatic cells, </em><u><em>DNA does not vary from one cell to another</em></u><em>.</em>

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In humans, the allele for dimples (D) is dominant to the allele for no dimples (d). At another gene locus, the allele for broad

Inga [223]

Answer:

Explanation:

As given, Allele for dimples(D) is dominant over alleles for no dimples (d), so D is dominant over d.

Allele for broad eyebrows (B) is dominant over allele for slender eyebrows (b), so B is dominant over b.

A man heterozygous for both traits ( DdBb) marries a women who has no dimple and heterozygous fro eyebrow (ddBb)

So cross is = DdBb × ddBb

1). Genotype of the man is DdBb.

2). Genotype of the woman is ddBb.

3). Genotype of the gametes produced by the man are DB, Db, dB and db.

4). Genotype of the gametes produced by the woman are dB and db.

5). Probability that their first child will have dimples 50% or 1/2

6). Probability that there first child will have both dimples as well as slender eyebrows 1/8

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3 years ago

Marvin has an exceptional amount of skill in athletics. Specifically, he is an extraordinary hockey player. Throughout his life

s2008m [1.1K]

Answer:

The correct answer is option c."niche-picking".

Explanation:

Niche picking is a psychological term used to describe the tendency of people choosing environments that complement their hereditary abilities, including making friends who share their abilities and interests. Marvin practice of choosing circumstances where he can practice his natural skills in playing hockey is an example of niche picking.

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3 years ago

Know what makes a solution acidic or basic (the pH number and the ions).

Brrunno [24]

To determine whether an acidic or basic solution, it is first necessary to compare the concentrations of the hydronium (H3O +) and hydroxide (OH-) ions in the solution.

In acidic solution, the concentration of H3O + ions is higher than that of OH- ions.

In acidic solution, the concentration of H3O + ions is higher than that of OH- ions. Such a solution can be achieved by adding a small part of the H3O + ions, for example. Acid solutions have a pH below 7, the further away from 7 the pH of the solution is the higher its acidity content. According to Le Chatelier's principle, when a disturbance is caused to an equilibrium system, it tends to readjust in order to diminish the effects of that force. This means that if an acid is added to water, the H3O + ions will be in excess and the equilibrium will shift in the opposite direction to the left. Then these excess ions will react with the OH- ions. Thus, the concentration of OH- ions will decrease and the solution will become acidic.
In basic solutions, the concentration of OH- ions is higher than that of H3O + ions. If we add a base to the water, it means that we will be adding OH- ions and, as explained in the previous section, by Le Chatelier's principle, the equilibrium of the water selfionization reaction will shift in the opposite direction, and the excess ions will react. with the H3O + ions, decreasing their concentration and making the basic solution. Basic solutions have a pH greater than 7, the farther from 7 and closer to 14 the pH of the solution, the higher the basification content.

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3 years ago

Which type of cell DOES have membrane-bound organelles?<br> A. eukaryotic<br><br> B. prokaryotic

Vlad1618 [11]

A. Eukaryotic because Ik Im right

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3 years ago

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lesya [120]

Answer:

The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.

Explanation:

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3 years ago