1) there are 23 chromosomes in a fertilised cell a) True b) False 2) a zygote is an unfertilised cell a) True b) False 3) gametes are sex cells a) True b) False 4) an embryo is the stage when the fertilised cell starts dividing a) True b) False 5) genes are located on chromosomes a) True b) False 6) this is the correct order largest first cell nucleus chromosomes genes DNA a) True b) False 7) there are 23 chromosomes in a sperm cell a) True b) False 8) there are 64 chromosomes or 23 pairs in a fertilised cell a) True b) False 9) both men and women have 22 chromosomes plus one pair that determin sex, the pair that dtermin a boy are xy a) True b) False 10) both men and women have 22 chromosomes plus one pair that determin sex, the pair that dtermin a girl are xx a) True b) False

genetics revision

by Anonymous
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