You come across a pea plant with yellow round peas but you aren't sure about it's genotype. 1. a. What are all the possible genotypes this plant could have? I b. In order to determine which genotype is correct you could do a test cross. Use one of the genotypes from 'a' and write out a test cross and the predicted progeny. C. Use another of the genotypes from 'a' and write out a test cross and the predicted progeny, clearly indicating how the progeny would be different and in different proportions depending on the genotype from 'a'.

What is the difference between a monohybrid cross and a dihybrid cross?    A.  A monohybrid cross involves a single parent, whereas a dihybrid cross involves two parents.  B.  A monohybrid cross produces a single progeny, whereas a dihybrid cross produces two progeny.  C.  A monohybrid cross involves organisms that are heterozygous for a single trait, whereas a dihybrid cross involves organisms that are heterozygous for two traits.  D.  A monohybrid cross is performed only once, whereas a dihybrid cross is performed twice.

In humans, potential or expecting parents can be tested for the presence of the allele for the autosomal recessive cystic fibrosis. Which combination of parents are LEAST likely to produce a child with cystic fibrosis?   A. 2 parents with cystic fibrosis   B. 2 parents without cystic fibrosis   C. 1 parent without cystic fibrosis and 1 with cystic fibrosis   D. 2 parents who do not know if they have cystic fibrosis