1) There are 23 chromosomes in a fertilised cell a) True b) False 2) Gametes are sex cells a) True b) False 3) Genes are located on chromosomes a) True b) False 4) How many chromosomes are there in a sperm cell? a) 23 b) 46 5) There are 23 pairs of chromosomes in a fertilised cell a) True b) False 6) What genotype do males have a) XY b) XX 7) Females have the genotype XY a) True b) False 8) A carrier of a cystic fibrosis.. a) Has the disorder b) Does not have the disorder 9) Polydactyly is a genetic disorder that: a) Results in extra digits (fingers or toes) b) Affects the shape of blood cells c) Affects the lungs 10) Cystic Fibrosis is a genetic disorder that: a) Results in extra digits (fingers or toes) b) Affects the shape of blood cells c) Affects the lungs and digestive system

Genetics revision combined science

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