Question

10) You are a plant breeder and have come across a pea plant with a mutant phenotype (that you assume is recessive), you decide to cross this plant with a pure-breeding wildtype plant. A. Write the genotypes of this cross B. What genotype(s) are the predicted offspring of this cross? C. What genotype should you cross with your F1 population (answer to part B) in order to get a generation that is approximately 50% wild-type and 50% mutant? 11) You are interested in the B gene which controls blue pigmentation in blueberries. Individual bushes that are homozygous recessive for the B gene are white. a. Write out a cross that would produce F1 progeny that are all monohybrids for the B gene b. If you wanted to obtain a pure breeding white blubbery bush, what type of breeding scheme could you use with your F1 bushes. 12) Wing size in drosophila is controlled by a single locus, dominant allele where a single copy of the mutant allele gives rise to short winged flies. a. what is the segregation ratio of wild type and short wing phenotypes that result from a monohybrid cross? b. If you crossed two long winged flies, what would the segregation ratio of phenotypes be in the resulting progeny?

          10) You are a plant breeder and have come across a pea plant with a mutant phenotype (that you assume is recessive), you decide to cross this plant with a pure-breeding wildtype plant.

A. Write the genotypes of this cross

B. What genotype(s) are the predicted offspring of this cross?

C. What genotype should you cross with your F1 population (answer to part B) in order to get a generation that is approximately 50% wild-type and 50% mutant?

11) You are interested in the B gene which controls blue pigmentation in blueberries. Individual bushes that are homozygous recessive for the B gene are white.

a. Write out a cross that would produce F1 progeny that are all monohybrids for the B gene

b. If you wanted to obtain a pure breeding white blubbery bush, what type of breeding scheme could you use with your F1 bushes.

12) Wing size in drosophila is controlled by a single locus, dominant allele where a single copy of the mutant allele gives rise to short winged flies.

a. what is the segregation ratio of wild type and short wing phenotypes that result from a monohybrid cross?

b. If you crossed two long winged flies, what would the segregation ratio of phenotypes be in the resulting progeny?

10) You are a plant breeder and have come across a pea plant with a mutant phenotype (that you assume is recessive), you decide to cross this plant with a pure-breeding wildtype plant.

A. Write the genotypes of this cross

B. What genotype(s) are the predicted offspring of this cross?

C. What genotype should you cross with your F1 population (answer to part B) in order to get a generation that is approximately 50% wild-type and 50% mutant?

11) You are interested in the B gene which controls blue pigmentation in blueberries. Individual bushes that are homozygous recessive for the B gene are white.

a. Write out a cross that would produce F1 progeny that are all monohybrids for the B gene

b. If you wanted to obtain a pure breeding white blubbery bush, what type of breeding scheme could you use with your F1 bushes.

12) Wing size in drosophila is controlled by a single locus, dominant allele where a single copy of the mutant allele gives rise to short winged flies.

a. what is the segregation ratio of wild type and short wing phenotypes that result from a monohybrid cross?

b. If you crossed two long winged flies, what would the segregation ratio of phenotypes be in the resulting progeny?

Added by Gary G.

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