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Consider two gene loci in the mouse, locus 1 and locus2. Each locus is on a different, nonhomologous autosomalchromosome . Alleles at locus 1 influence furcolor. Allele A is for black and allele ais for white. Allele A is completely dominant toallele a . Alleles at locus 2 influencestature; allele B is for tall and allele b is forshort. Allele B is completely dominant to alleleb.

Mouse 1, genotype Aa Bb, mates with femalemice , genotype Aa Bb; 100 progeny areproduced.



___: What fraction of the gametes from mouse 1 is expected to begenotype Ab ?

___: What fraction of the gametes from mouse 1 is expected tohave allele a ?

___: What fraction of the progeny is expected to betrue-breeding for both stature and black fur?

___: How many progeny are expected to be tall with white fur?Show yourcalculations.

___: How many progeny are expected to be heterozygous at bothloci? Show yourcalculations.

___: If you randomly choose two progeny mice, one at a time,what is the probability that both mice are tall andwhite? Show yourcalculations.



Consider two gene loci in the mouse, locus 1 and locus2. Each locus is on a different, nonhomologous autosomalchromosome . Alleles at locus 1 influence furcolor. Allele A is for black and allele ais for white. Allele A is completely dominant toallele a . Alleles at locus 2 influencestature; allele B is for tall and allele b is forshort. Allele B is completely dominant to alleleb.

Mouse 1, genotype Aa Bb, mates with femalemice , genotype Aa Bb; 100 progeny areproduced.



___: What fraction of the gametes from mouse 1 is expected to begenotype Ab ?

___: What fraction of the gametes from mouse 1 is expected tohave allele a ?

___: What fraction of the progeny is expected to betrue-breeding for both stature and black fur?

___: How many progeny are expected to be tall with white fur?Show yourcalculations.

___: How many progeny are expected to be heterozygous at bothloci? Show yourcalculations.

___: If you randomly choose two progeny mice, one at a time,what is the probability that both mice are tall andwhite? Show yourcalculations.

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Sixta Kovacek
Sixta KovacekLv2
28 Sep 2019
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