if a typical somatic cell has 32 chromosomes, how many chromosomes are expected in each gamete of that organism? pls explain. how would the answer differ from if the cell demonstrated nondysjunction.
2007-11-05 05:57:16 · 2 answers · asked by damigurl05 1 in Science & Mathematics ➔ Biology
After meiosis each would have 16.
This is because the chromosomal number splits in half when gametes are formed - so that when fertilization takes place, the number is whole again (16+16 = 32)
If nondysjunction were to occur - this means the chromosomes did not split properly during meiosis I (usually anaphase I believe).. so the gamete is left with a pair of sister chromatids plus the chromosome it receives from fertilization - so that gamete would have 17 chromosomes instead of 16.
2007-11-05 06:08:20 · answer #1 · answered by nixity 6 · 0⤊ 0⤋
Begin with the chicken or the egg...fight not about which was FIRST!
2007-11-05 06:05:45 · answer #2 · answered by uncle_derk 3 · 0⤊ 1⤋