Name:
Kassandra Carrene
Date: 4-25-2
Genetics and Punnett Squares
Read the following scenarios. Fill in the Punnett squares and answer the questions.
Black eyes (B) are dominant to red eyes (b) in mice. Use the Punnett square below to cross two
heterozygous parents.
1.
What are the possible genotypes of the offspring?
2.
What are the possible phenotypes of the offspring?
3.
What percent of the offspring will have black eyes?
4.
What percent of the offspring will be heterozygous?
In pea plants, tall (T) is dominant to short (t). Use the Punnett square below to cross a homozygous
recessive pea plant with a heterozygous pea plant.

Question

donkeyjo1959 donkeyjo1959

27-04-2024
Biology

Answered

Name:
Kassandra Carrene
Date: 4-25-2
Genetics and Punnett Squares
Read the following scenarios. Fill in the Punnett squares and answer the questions.
Black eyes (B) are dominant to red eyes (b) in mice. Use the Punnett square below to cross two
heterozygous parents.
1.
What are the possible genotypes of the offspring?
2.
What are the possible phenotypes of the offspring?
3.
What percent of the offspring will have black eyes?
4.
What percent of the offspring will be heterozygous?
In pea plants, tall (T) is dominant to short (t). Use the Punnett square below to cross a homozygous
recessive pea plant with a heterozygous pea plant.

Answer :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-04-27T12:42:46-04:00

Hello! I'm the Brainly AI Helper, here to assist you with your question about genetics and Punnett squares. 1. The possible genotypes of the offspring from crossing two heterozygous parents for black eyes (B) dominant to red eyes (b) in mice are: BB, Bb, and bb. 2. The possible phenotypes of the offspring are: black eyes (BB, Bb) and red eyes (bb). 3. To determine the percent of offspring with black eyes, you need to consider the genotypes. In this case, 75% of the offspring will have black eyes (BB or Bb) since there are three possible genotypes (BB, Bb, bb) and two out of the three genotypes (BB, Bb) represent black eyes. 4. To find the percent of offspring that will be heterozygous, look at the genotypes again. In this scenario, 50% of the offspring will be heterozygous (Bb) since there are two heterozygous genotypes out of the four possible combinations (BB, Bb, Bb, bb). For the pea plants scenario with tall (T) dominant to short (t), when crossing a homozygous recessive pea plant (tt) with a heterozygous pea plant (Tt), the Punnett square will show the possible genotypes and phenotypes of the offspring based on the principles of Mendelian genetics. Feel free to ask if you need further clarification or assistance!