Question
ou will perform a pentahybrid cross for species of crayfish - you will cross 2 individuals. You will be looking at 5 genes. The genotype
ou will perform a pentahybrid cross for species of crayfish - you will cross 2 individuals. You will be looking at 5 genes. The genotype for all the genes for each parent will be heterozygous.
All genes are unlinked. The alleles for each gene are as follows:
Gene for antenna length
- Long Antenna (A) dominant to short antenna (a)
Gene for carapace color
- Red (R) is dominant to Green (r)
Gene for claw length
- Incomplete dominance between Long Claw (CL) and Short Claw (CS)
Gene for tubercle color
- Having a tubercle (E) is controlled by an epistatic gene. Not having a tubercle is recessive
- Blue Tubercle (B) is dominant to Yellow Tubercle (b)
Calculate the probability of this cross producing a crayfish with the following characteristics:
Heterozygous for long antenna
Green Carapace
Medium length claws
Homozygous for the epistatic gene producing yellow tubercles
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