GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
If a Homozygous red snapdragon and a Heterozygous pink snapdragon were crossed-what percentage of the offspring would be homozygous white?
|
|
0%
|
|
|
25%
|
|
|
50%
|
|
|
75%
|
Explanation:
Detailed explanation-1: -Since the heterozygous hybrid individual shows a different phenotype i.e. pink colour flowers.
Detailed explanation-2: -Therefore, the probability that the offspring produced by two pink snapdragons will also be pink is 50 percent.
Detailed explanation-3: -Figure 21: A cross between a red and white snapdragon will yield 100% pink offspring. This pattern of inheritance is described as incomplete dominance, meaning that neither of the alleles is completely dominant over the other: both alleles can be seen at the same time.
Detailed explanation-4: -So, the correct option is ‘25%’.
There is 1 question to complete.