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Assuming that all generation III individuals marry partners that are homozygous recessive for these two genes, it is reasonable to conclude that individuals A - VCE - SSCE Biology - Question 7 - 2004 - Paper 1
Question 7
Assuming that all generation III individuals marry partners that are homozygous recessive for these two genes, it is reasonable to conclude that individuals A. 5 and... show full transcript
Worked Solution & Example Answer:Assuming that all generation III individuals marry partners that are homozygous recessive for these two genes, it is reasonable to conclude that individuals A - VCE - SSCE Biology - Question 7 - 2004 - Paper 1
Step 1
5 and 6 have an equal chance of having a non-secreter child.
Answer
To evaluate the chance of individuals 5 and 6 having a non-secreter child, we need to consider that both are marrying partners who are homozygous recessive for the relevant genes. Assuming that their genotypes allow for inheritance of these traits, they will have an equal chance of producing a non-secreter child.
Step 2
6 and 12 have an equal chance of having a non-secreter child.
Answer
Individuals 6 and 12 marry partners that are homozygous recessive, thus the probability of having a non-secreter child remains equal for both. Their genetic backgrounds indicate no difference in likelihood of this specific trait appearing in their offspring.
Step 3
5 and 6 have an equal chance of having a child who fails to produce protein X.
Answer
Both individuals 5 and 6 will have children that follow the principles of Mendelian genetics, and if marrying homozygous recessive partners, they indeed have an equal probability of having a child that fails to produce protein X.
Step 4
6 and 12 have an equal chance of having a child who fails to produce protein X.
Answer
The probability analysis is the same for individuals 6 and 12, as they are both engaging with partners that are homozygous recessive. Thus, they share equal likelihoods for having children that fail to produce protein X.