What are the expected frequencies of foals from the following mating: Ee X Ee?

To analyze the expected frequencies of foals from a mating of Ee (heterozygous for a trait) X Ee, we can use a Punnett square for visual representation and calculation.

In this scenario, each parent can contribute either an E (dominant allele) or an e (recessive allele). When setting up the Punnett square, we find the following combinations:

1. E from the first parent with E from the second parent results in EE (homozygous dominant).

2. E from the first parent with e from the second parent results in Ee (heterozygous).

3. e from the first parent with E from the second parent also results in Ee.

4. e from both parents results in ee (homozygous recessive).

When we tally these outcomes:

• There is 1 EE,

• There are 2 Ee,

• There is 1 ee.

This gives us a total of 4 combinations. The frequencies are then:

• 1/4 (25%) for EE,

• 2/4 (50%) for Ee,

• 1/4 (25%) for ee.

This analysis shows that the expected frequencies of foals will be 25% EE