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6 Nov 2019
Three independent ioci (A, B, and C) determine 3 unique aspects of the petals of flowers a plant, and each locus has one allele that is completely dominant over the other. Gene A determine if the flower petals have the dominant color red or the recessive color cream. Gene B determine if the flower petals have dominant long petals or recessive short petals. Gene C determine if the flower petals have the dominant separated petals or the recessive fused petals. A true breeding plant #1 with red, separated, and long petals is crossed to a true breeding plant #2 with cream, fused and short petals to generate F1 offspring. One of these A1 offspring to an individual that is homozygous for recessive alleles at all loci. Using capital letters for dominant alleles and lowercase letters for recessive alleles, write out the described parental cross: Using capital letters for dominant alleles and lowercase letters for recessive alleles, write out the described F1 cross: What kind of cross is the cross involving the F1 offspring? What is the probability of offspring of the F1 cross being homozygous for the recessive allele at the A locus, heterozygous at the B locus, and homozygous for the recessive allele at the C locus? Construct a complete branched diagram for the F1 cross. Including proportion, genotype, and phenotype at each branch point. Show transcribed image text
Three independent ioci (A, B, and C) determine 3 unique aspects of the petals of flowers a plant, and each locus has one allele that is completely dominant over the other. Gene A determine if the flower petals have the dominant color red or the recessive color cream. Gene B determine if the flower petals have dominant long petals or recessive short petals. Gene C determine if the flower petals have the dominant separated petals or the recessive fused petals. A true breeding plant #1 with red, separated, and long petals is crossed to a true breeding plant #2 with cream, fused and short petals to generate F1 offspring. One of these A1 offspring to an individual that is homozygous for recessive alleles at all loci. Using capital letters for dominant alleles and lowercase letters for recessive alleles, write out the described parental cross: Using capital letters for dominant alleles and lowercase letters for recessive alleles, write out the described F1 cross: What kind of cross is the cross involving the F1 offspring? What is the probability of offspring of the F1 cross being homozygous for the recessive allele at the A locus, heterozygous at the B locus, and homozygous for the recessive allele at the C locus? Construct a complete branched diagram for the F1 cross. Including proportion, genotype, and phenotype at each branch point.
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Jamar FerryLv2
6 Nov 2019
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