What is a major source of genectic variation for plants and animals?

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What is a major source of genectic variation for plants and animals?

PLS ANYONE??

2007-03-18 14:17:40 · 3 answers · asked by jeremy 1 in Science & Mathematics ➔ Biology

3 answers

crossing over

2007-03-18 14:20:50 · answer #1 · answered by wesnaw1 5 · 0⤊ 0⤋

Genetic recombination. Because of sexual reproduction, the genes present in the parents get shuffled around. Crossing over in meiosis increases the amount of shuffling of genes.

2007-03-18 21:25:48 · answer #2 · answered by kz 4 · 0⤊ 0⤋

spontaneous mutations caused by transcription error, ionizing radiation, and some chemical exposures

2007-03-18 21:26:25 · answer #3 · answered by jpturboprop 7 · 0⤊ 0⤋