Question

Genetics & Heredity

1. How do the Punnett squares for a monohybrid cross and a dihybrid cross differ?


2. What are the genotypes of gametes of an AaBb self-pollination?


3. Mendel carried out a dihybrid cross to examine the inheritance of the characteristics for seed color and seed shape. The dominant allele for yellow seed color is Y, and the recessive allele for green color is y. The dominant allele for round seeds is R, and the recessive allele for a wrinkled shape is r. The two plants that were crossed were F1 dihybrids RrYy. Identify the ratios of traits that Mendel observed in the F2 generation. Create a Punnett square to help you answer the question.

Answer 1

Answer:Biologists use a diagram called a Punnett square, to help predict the probable inheritance of alleles in different crosses.

There are four possible combinations of gametes for the AaBb parent. Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele. Both parents produce 25% each of AB, Ab, aB, and ab.

The last one I can't answer sorry.

Step-by-step explanation:

hope this is good.