(a) If a normal human cell has 46 chromosomes, how many chromosomes will be there in a human (i) sperm cell, and (ii) zygote? (b) What sizes of plants are produced if both parents have genes Tt?
BiologyClass 10ICSEAnswered 27 Mar 2026
Answer
(a) (i) The number of chromosomes present in it will be 23 as the sperm cell will have half the number of chromosomes than present in a normal cell.
(ii) The number of chromosomes present in it will be 46 as the number of chromosomes in a zygote will be same as present in a normal cell.
(b) Tall and dwarf plants will be produced in the ratio 3:1.
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