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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 an... 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
A. 5 and 6 have an equal chance of having a non-secretor child.
Answer
To determine whether 5 and 6 have an equal chance of having a non-secretor child, we need to analyze the genetic inheritance patterns. Assuming both partners are homozygous recessive, both 5 and 6 would pass on the recessive alleles. Thus, their chances of having a non-secretor child would be equal due to the homozygous recessive condition.
Step 2
B. 6 and 12 have an equal chance of having a non-secretor child.
Answer
Similar to the analysis of A, if individuals 6 and 12 are both mating with partners that are homozygous recessive, their genetic contributions would also result in equal chances of producing a non-secretor child, given the same initial genetic conditions.
Step 3
C. 5 and 6 have an equal chance of having a child who fails to produce protein X.
Answer
If 5 and 6 are both paired with partners who are homozygous recessive for the gene responsible for protein X, their children would also have equal chances of failing to produce that protein, as both parents would contribute the recessive alleles.
Step 4