Non-Mendelian Inheritance -- Practice Problems

Non-Mendelian Inheritance Practice Problems Work must be neatly done!! Be sure to make dominant and recessive alleles clearly distinguishable. punnett squares should show genotypes and you should summarize the phenotypes based on what the question is asking. 1. In plants known as four o'clocks , the allele for the dominant red flower colour is designated as F'. and is incompletely dominant over the allele for white flowers f'. A horticulturist allows several heterozygous pink flowered four o'clocks to self-pollinate and collects 200 seeds. Draw a punnett square for the cross and then identify the flower colour phenotypes and theoretical percentage, and number of plants expected from these seeds.

a. Draw a Punnett square for the cross that shows this cross. Y y Y YY Yy (yellow) y Yy (yellow) yy (white) b. Why do the phenotypes reflect a 2:1 ratio rather than a 3:1 ratio result from this cross? When the genotype is homozygous dominant, it is lethal so the dominant phenotype is only represented by heterozygous individuals.

Loading..

Tags:

  Square, Punnett, Mendelian, Punnett square, Non mendelian

Information

Related search queries