ANALYZE What do the letters on the top and side of a Punnett square represent?

(C) Describe /explain the relationship between Mendel's Law of segregation and the letters that you used as column and row labels in your Punnett square table. (B) Solve the expected genotypic and phenotypic ratios for the F2 progeny that would result from the F1 cross: Ww x Ww using a Punnett square. Assume that the capital letters indicate that an allele is dominant.

1. Which statement about Punnett Squares is true?

2. Which of the following statements is true of sex-linked traits on the X chromosome?

Genetics Suppose that the wild type phenotype for apples is yellow, short fruit with large leaves and that a strain of mutant apples has red, round fruit with small leaves. A and a represent the alleles for fruit color, B and b represent the alleles for fruit shape, and C and c the leaf shape. Two apples with the genotypes, Aa Bb cc and Aa Bb CC, are crossed. The resulting Punnett square is shown below. One square has been completed with the correct apple phenotype. Fill in the rest of the Punnett square by placing a fruit and leaf phenotype in each square.

What are the modes of inheritance for each trait in the mutant strain of apples?