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VICBiologyQuick questions

Unit 2: How does inheritance impact on diversity?

Quick questions on Models of inheritance (dominant, codominant, incomplete dominance, multiple alleles, sex-linked): VCE Biology Unit 2

5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What are multiple alleles?
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A gene can have more than two alleles in a population, although any one diploid individual still carries only two.
What is sex-linked inheritance?
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A sex-linked gene is one whose locus is on a sex chromosome.
What is q1?
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Distinguish between codominance and incomplete dominance with one example for each. [2 marks]
What is q2?
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A heterozygous black-and-white speckled chicken (BWBW) is crossed with a white chicken (WWWW). Predict the phenotypic ratio of offspring assuming codominance between BB and WW. [2 marks]
What is q3?
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Refer to the ABO blood system. (a) State the three alleles and their dominance relationships. (b) A type-A father and a type-B mother have a type-O child.

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