A purebred plant that produces yellow seeds (YY) is crossed with a purebred plant that produces green seeds (yy). The seeds of all of the offspring are yellow. Why? A. The yellow allele is recessive to the green allele. B. All of the offspring are homozygous yellow. C. The alleles are codominant. D. The yellow allele is (completely) dominant to the green allele.

A purebred plant that produces yellow seeds (YY) is crossed with a purebred plant that produces green seeds (yy). The seeds of all of the offspring are yellow. Why? A. The yellow allele is recessive to the green allele. B. All of the offspring are homozygous yellow. C. The alleles are codominant. D. The yellow allele is (completely) dominant to the green allele.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter8: Patterns Of Inheritance

Section: Chapter Questions

Problem 9RQ: What is the reason for doing a test cross? a. to identify heterozygous individuals with the dominant...

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Fruit flies are very useful model organisms that have been used to study genetics. One mutant recessive trait in fruit flies is called "eyeless" because it causes flies to have no eyes. Cross an eyeless fly with a homozygous normal fly. a. Draw the Punnett square. b. What is the genotyoe ratio of the offspring? c. What is the phenotype ratio of the offspring? d. What genetic problem is this? (monohybrid, dihybrid or multiple allele)
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