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What would be the phenotypic ratio of the offspring? 3 hairy: 1 hairless 1 HH : 2 Hh:1 hh

Pergunta

What would be the phenotypic ratio of the offspring?
3 hairy: 1 hairless
1 HH : 2 Hh:1 hh

What would be the phenotypic ratio of the offspring? 3 hairy: 1 hairless 1 HH : 2 Hh:1 hh

Solução

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Yara MariaElite · Tutor por 8 anos

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The phenotypic ratio of the offspring would be 3 hairy: 1 hairless.

Explicação

## Step 1
The problem is about Mendelian genetics, specifically the concept of dominance and recessiveness. The problem provides a genetic cross between two heterozygous parents (Hh).

## Step 2
The genetic cross can be represented using a Punnett square. The Punnett square is a graphical representation that shows the possible combinations of alleles that can occur in the offspring.

## Step 3
The Punnett square for this cross would look like this:

| | H | h |
|---|---|---|
| H | HH | Hh |
| h | Hh | hh |

## Step 4
From the Punnett square, we can see that there is 1 HH, 2 Hh, and 1 hh. This corresponds to the genotypic ratio of 1:2:1.

## Step 5
The problem also provides a phenotypic ratio of 3 hairy: 1 hairless. This means that the hairy trait is dominant and the hairless trait is recessive.

## Step 6
The phenotypic ratio corresponds to the genotypic ratio, which means that the hairy trait (H) is dominant and the hairless trait (h) is recessive.
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