WACE Human Biology Unit 4 human variation and evolution: exam-style practice quiz
12 questions. Pick an answer and you'll see why right away. Options are shuffled each attempt, and the review at the end links each missed question to the dot point to revise.
A mother has blood group A (genotype ) and a father has blood group B (genotype ). The probability that their first child has blood group O is:
Red-green colour blindness is X-linked recessive. A carrier mother () and a colour-blind father () have a daughter. The probability that she is colour blind is:
In a population in Hardy-Weinberg equilibrium, 9 percent of people show a recessive trait. The proportion of people who are heterozygous carriers is:
A small group of settlers founded an island population 300 years ago. A rare allele in the mainland population is now common on the island. The best explanation is:
Data on human birth mass show that babies of very low and very high birth mass have higher mortality than babies of intermediate mass. This is an example of:
Two populations of a species were separated by a mountain range for a very long time. Which observation would show that speciation has occurred?
Which skeletal feature is an adaptation for habitual bipedalism?
Which trend is seen in the evolution of the genus Homo, from early species to Homo sapiens?
Carbon-14 has a half-life of about 5730 years. A charcoal sample from a hearth retains 12.5 percent of its original carbon-14. Its approximate age is:
Why is mitochondrial DNA particularly useful for tracing human ancestry through the maternal line?
Which evidence most directly supports the Out of Africa (recent African origin) hypothesis for modern humans?
Which process is the original source of all new alleles in a population?