§-Quick questions
NSWBiologyModule 5: Heredity
Quick questions on Sex-linked inheritance explained: HSC Biology Module 5
6short 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 is standard carrier-mother cross?Show answer
Carrier mother () × unaffected father ().
What is affected father, unaffected mother?Show answer
Affected father () × unaffected non-carrier mother ().
What are wrong denominators?Show answer
"50% of sons are affected" is different from "25% of all children are affected sons." Read what the question asks you to count.
What is read the command word?Show answer
"Predict" wants offspring genotypes and phenotypes; "determine" or "explain how a cross could show" wants you to compare outcomes under two hypotheses (sex-linked vs autosomal).
What are separate sons from daughters?Show answer
State the son outcome and the daughter outcome separately - the whole point of sex-linkage is that they differ.
What is quote the right denominator?Show answer
Decide whether the question wants a fraction of sons, a fraction of daughters, or a fraction of all children, and answer in those terms.
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