In: Biology
The genes for A, B, C and E assort independently. If a plant with the genotype AaBBCcEe is crossed with a plant with the genotype aaBbccEe, what is the probability of progeny having the genotype aaBbCcee?
AaBBCcEe * aaBbccEe
let`s divide this cross into four different crosses
1) Aa * aa
A | a | |
a | Aa | aa |
a | Aa | aa |
probability of getting aa= number of aa/total number=2/4=1/2
2) BB * Bb
B | b | |
B | BB | Bb |
B | BB | Bb |
probability of getting Bb= number of Bb/total number=2/4=1/2
3) Cc * cc
C | c | |
c | Cc | cc |
c | Cc | cc |
probability of getting Cc= number of Cc/total number=2/4=1/2
4) Ee * Ee
E | e | |
E | EE | Ee |
e | Ee | ee |
probability of getting ee= number of ee /total number=1/4
probability of getting aaBbCcee= probability of getting aaprobability of getting Bbprobability of getting Cc probability of getting ee=1/21/21/21/4=1/32