Exciting Dihybrid Cross: Rose Bushes Phenotype Variations
How many different phenotype variations are possible in the offspring of these crossed rose bushes?
R = red petals, r = pink petals, T = tall bush, t = short bush
Answer: Four (4)
Explanation: Assuming that the R (red petal) allele is dominant over the r (pink petal) allele and the T (tall bush) allele is dominant over the t (short bush):
The exciting dihybrid cross of two rose bushes has resulted in four possible phenotype variations among the offspring. The dominant alleles for red petals (R) and tall bushes (T) play a key role in determining the characteristics of the offspring. Here are the four potential phenotype variations:
- R_T_ = Red petal with tall bush
- R_tt = Red petal with short bush
- rrT_ = Pink petal with tall bush
- rrtt = Pink petal with short bush
After analyzing the Punnett square, we can determine the number of offspring with each phenotype variation:
- Total number of R_T_ = 9
- Total number of R_tt = 3
- Total number of rrT_ = 3
- Total number of rrtt = 1
Hence, there are four (4) possible phenotype variations with their respective proportions as mentioned above. The genetic diversity among the offspring of these crossed rose bushes is truly remarkable!