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ollegr [7]
3 years ago
14

In the parental generation, inbred black and an albino mice parents mate. The resulting F1 mice are black and heterozygous at 2

different loci. The F2 population consists of black, white, and albino mice. Albino is epistatic to pigmented. What is the phenotypic segregation ratio of this mouse species in the F2 generation? Enter your answer in the format: "4:3:2". Note lack of color pigmentation is recessive.
Biology
1 answer:
Semenov [28]3 years ago
7 0

Answer:

12:4:3

Explanation:

Let the lack of color pigmentation which is recessive be aa where AA and Aa allow for color (BB, Bb - black, baby - white).

The F1 parents are BbAa x BbAa

This cross will produce 12/16 blacks, 4/16 albinos and 3/16 white.

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Answer:

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3 years ago
Which situation could decrease the carrying capacity for humans in a certain
nika2105 [10]

Answer:

A crop disease becoming resistant to medicine

Explanation:

The carrying capacity of a habitat is the maximum number of individuals of a given species it can support without depleting the available resources. The carrying capacity for humans in a certain region would decrease because of a crop disease becoming resistant to medicine that would reduce the yield. This would lead to increased starvation and malnourished people.

3 0
3 years ago
Read 2 more answers
A blue-eyed, left-handed woman marries a brown-eyed, right-handed man who is heterozygous for both of his traits. if blue eyes a
Juliette [100K]
If you look at a Punnet square of this, you can determine the possible phenotypes. Lets assign B for brown eyes, b for blue eyes, H for right hand and h for left hand. 

The mother is blue eyed and left handed which are both recessive traits. This means that her genotype would be bbhh. Now the father is heterozygous for both, which means he has a dominant and recessive allele for each trait. His genotype would then be BbHh

The Punnet square should look like the table below:

Mother:bbhh
Father:BbHh

         bh          bh        bh        bh
BH  BbHh    BbHh    BbHh   BbHh   
Bh   Bbhh     Bbhh    Bbhh    Bbhh
bH   bbHh     bbHh    bbHh    bbHh
bh   bbhh      bbhh     bbhh     bbhh

Based on the Punnet square, you have 4 possible genotypic combinations and 4 possible phenotypic combinations.

BbHh: Brown-eyed, right-handed
Bbhh:  Brown-eyed, left-handed
bbHh   Blue-eyed, right handed
bbhh    Blue-eyed, left-handed

5 0
3 years ago
2 places ribosomes are located
ollegr [7]

Ribosomes are located in the cytoplasym and in the endoplasmic reticulum.

Hope helps!-Aparri

7 0
3 years ago
hawaii has formed on the pacific plate. hawaii is also over a hot spot thta allows magma to reach the surface of the earth, via
lana66690 [7]

Answer:

The northwest moving Pacific Plate has moved across the 'hot spot' that created the Hawaiian Islands for millions of years. This movement has left the northwest trending island chain

Explanation:

If the Pacific Plate keeps moving across the hot spot I believe Hawaii will keep becoming a bigger island because the Pacific plates movement caused Hawaii to form.

8 0
3 years ago
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