3

An albino woman marries a phenotypically normal man with no family history of albinism. What percentage of their children are li

maw [93]

Answer:

0%

Explanation:

This involves a single gene coding for melanin pigment in the skin. The recessive form of this gene (allele) is albinism while the dominant form is a normal skin. The question highlights that the normal male parent (dominant) has no family history of albinism, this means that nobody in their family has ever possessed albinism or has been a carrier/heterozygous for the trait. This is because a carrier/heterozygote will always produce the recessive trait (albinism) if crossed with another carrier or albino individual.

In a nutshell, the normal male parent is homozygous for the dominant trait. Hence, if a homozygous dominant male is crossed with an albino woman (homozygous recessive), all their offsprings will possess a heterozygous genotype and dominant phenotype. Meaning that none of their children will ba an albino.

Hence, the percentage of their child being an albino is 0.

7 0

3 years ago

A museum curator collects fossils from two different periods. He has 400 from one period and 204 from a later period. He plans t

matrenka [14]

Answer:

4

Explanation:

Number of fossils collected over period 1:

400

Number of fossils collected at a later period :

204

For each display case to have the same number of fossils ; the greatest number of fossils possible per case:

Obtain the greatest common factor of both 400 and 204

400 = 1, 2, 4, 5, 8, 10, 25, 40, 50, 80, 100, 200, 400

204 = 1, 2, 3, 4, 6, 12, 17, 34, 51, 102

Hence, the greatest common factor (400 and 204) is 4

Hence, the greatest Number of Fossil possible per case = 4

6 0

2 years ago

Rna is a part of many cellular processes, particularly those associated with protein synthesis: transcription, rna processing, a

Ksivusya [100]

<span>transcription/RNA processing-
pre-mRNA, mRNA, snRNA

translation- rRNA, tRNA</span>

3 0

3 years ago

Elaborate on the difference between 2o and o2.

ohaa [14]

Two atoms of oxygen element are represented as "20". The two oxygen atoms are unreactive state and are unstable readily reacts and form molecules.
O₂ reprersents one molecule oxygen. When the two oxygen atoms reacts with each other forms one molecule of Oxygen. After the formation of Oxygen molecule, it (oxygen) has got stability.

5 0

3 years ago

For water to travel across the cell membrane at a substantial rate, what does it need?

jeka57 [31]

Answer:

It needs protein channels known as Aquaporins.

Explanation:

These Aquaporins, also referred to as water channels, are membrane proteins which serve as passageways for water. Aquaporins facilitate the transportation of water and other neutral molecules across cell membranes.

8 0

3 years ago