In a human, how many chromosomes are present in:
(a) a brain cell ?
(b) a sperm in the testes ?
(c) an egg which has just been produced by the ovary?
(d) a skin cell ?
(e) a fertilized egg ?
(a) 46 (23 pairs of chromosome)
(b) 23 chromosomes (haploid)
(c) 23 chromosomes (haploid)
(d) 46 chromosomes (23 pairs of chromosome)
(e) 46 chromosomes (since it is fertilized by the sperm)