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liq [111]
3 years ago
13

The mating of an Aa male and an aa female produced an offspring with the genotype AAa. Therefore, the offspring has 3 copies of

gene 1 (trisomy for Chromosome 1). At what stage during meiosis did the non-disjunction event occur and in which parent?
Biology
1 answer:
blondinia [14]3 years ago
5 0

Answer:

<em>Ana-phase 1 of Meiosis 1 in Male Parent...</em>

Explanation:

It is clear that meiosis is only happening in male due to AAa nondisjuction of dominant AA from male parent. The disjunction is occuring during spermato-genesis during Ana-phase 1 of Meiosis 1 cause it is only possible explanation of tri-somy at Chromosome 1...

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