A cross between homozygous purple-flowered and homozygous white-flowered pea pla

Question

A cross between homozygous purple-flowered and homozygous white-flowered pea plants results In offspring with purple flowers. This demonstrates true-breeding co-dominance dominance Mendel made a mistake incomplete dominance A cell with a diploid number of 24 undergoes meiosis. How many chromosomes are in each daughter cell? 6 12 24 48 92 When crossing an organism that is homozygous recessive for a single trait with a heterozygote, what is the chance of producing an offspring with the homozygous recessive phenotype? 75% 50% 0% 100% 25%

Explanation / Answer

Answer:

1) Dominance

Purple is dominant and white is recessive, so offsprings produced are purple.

PP(purple) x pp (white) =   Pp, Pp,Pp,Pp (Heterozygous dominant )

2) B , 12

When one diploid cell undergo meosis, it produces four haploid cells

Diploid = 24,    so after meiosis,,, haploid - 12

3) B, 50%

Cross between Heterozygous x Homozygous recessive

                       (Homozygous recessive) tt x Tt (heterozygous) = tT, tT, tt,tt

                                                                                              = 50% tt (Homozygous recessive)

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