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140 questions found · practise this subject as a set Show 20 · 50 per page

#	Question	Subject and topic	Difficulty
21	Which law states that the two alleles of a gene separate into different gametes?	Anthropology Human genetics	Easy
22	Haemophilia is much more common in men than in women because it is	Anthropology Human genetics	Easy
23	Two parents with normal pigmentation have a child with albinism, an autosomal recessive trait. What is the ch…	Anthropology Human genetics	Medium
24	Beard growth is controlled by genes present in both sexes but is normally expressed only in males. Such a tra…	Anthropology Human genetics	Medium
25	A woman who is a carrier of red–green colour blindness marries a man with normal vision. What proportion of t…	Anthropology Human genetics	Hard
26	How many chromosomes are present in a normal human body (somatic) cell?	Anthropology Chromosomes and their aberrations	Easy
27	Down syndrome is caused by	Anthropology Chromosomes and their aberrations	Easy
28	A karyotype shows 47 chromosomes with the sex chromosomes XXY. The person is most likely to have	Anthropology Chromosomes and their aberrations	Medium
29	A segment of chromosome breaks off and reattaches to a different, non-homologous chromosome. This structural …	Anthropology Chromosomes and their aberrations	Medium
30	If the two X chromosomes fail to separate during egg formation, an egg may carry no X at all. If this egg is …	Anthropology Chromosomes and their aberrations	Hard
31	Which force of evolution is the ultimate source of all new genetic variation?	Anthropology Forces of evolution	Easy
32	Movement of genes from one population into another through migration and intermarriage is called	Anthropology Forces of evolution	Easy
33	A small group of families settles on an isolated island and, by chance, one of them carries a rare recessive …	Anthropology Forces of evolution	Medium
34	Why does the sickle-cell allele remain common in some malaria-affected regions even though homozygotes suffer…	Anthropology Forces of evolution	Medium
35	In a population in Hardy–Weinberg equilibrium, 16% of people show a recessive trait. What is the frequency of…	Anthropology Forces of evolution	Hard
36	Who discovered the ABO blood group system?	Anthropology Genetic markers	Easy
37	Which type of DNA is passed on only through the mother and is used to trace maternal ancestry?	Anthropology Genetic markers	Easy
38	The relationship between alleles IA and IB, where both are fully expressed in a person of blood group AB, is …	Anthropology Genetic markers	Medium
39	A father has blood group A and a mother has blood group B. Their first child has blood group O. What are the …	Anthropology Genetic markers	Medium
40	A couple both of blood group AB have a child. Which blood group is NOT possible for the child?	Anthropology Genetic markers	Hard