Punnett Practice A cross between 2 heterozygous plants yields 1252 offspring. How many are dominant and how many are recessive?

Answer 313 recessive 939 dominant

Punnett Practice #2 A cross between a homozygous recessive parent and a heterozygous parent yields 350 dominant offspring. How many recessive would you expect? What is the total number of offspring?

Answer 350 recessive 700 total

Punnett Practice #3 Two unknown parents cross and produce 36 offspring. 9 of them are homozygous dominant, 18 of them are heterozygous dominant, 9 of them are homozygous recessive. What is the genotype of the parents?

Both parents are heterozygous Answer Both parents are heterozygous

Punnett Practice #4 If a pea plant that is heterozygous for 2 traits (tall and purple) is crossed with a plant that is homozygous recessive (short and white), what portion of the 9,822 peas that are produced would yield plants that are tall and white?

Tall and white is T_pp That’s 1/4 of 9822 Which is 2,455.5 Answer Tall and white is T_pp That’s 1/4 of 9822 Which is 2,455.5 or about 2456

Punnett Practice #5 If a pea plant that is heterozygous for 2 traits (Tall and purple) is self pollinated, what portion of the 9822 offspring would be tall and white?

Answer Tall and white is T_pp. That’s 3/16 of 9822 Which is 1,841.6 or about 1842.