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A gene in Hereford cattle has the alleles H, having horns, and h, being hornless - VCE - SSCE Biology - Question 2 - 2010 - Paper 1
Question 2
A gene in Hereford cattle has the alleles H, having horns, and h, being hornless. Some farmers choose to humanely remove the horns as horns can be used to injure oth... show full transcript
Worked Solution & Example Answer:A gene in Hereford cattle has the alleles H, having horns, and h, being hornless - VCE - SSCE Biology - Question 2 - 2010 - Paper 1
Step 1
B. carry at least one 'h' allele.
Answer
Given that Iris is a hornless cow, she must have the genotype 'hh' (homozygous recessive). Stanley, being hornless, must also carry the 'h' allele. When mated, all calves will inherit one allele from each parent. Therefore, all calves will inherit at least one 'h' allele from either parent.