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49. The haploid organism for two gene pairs will showwhat phenotypic ratio instead of 9:3:3 1?(a) 1:3 1(b) 9:3:6 |
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Answer» The haploid organisms produce gametes which unite during fertilisation and form a zygote. The diploid zygote undergoes meiosis immediately to produce haploid organisms. This type of meiosis that occurs after fertilisation is called zygotic meiosis. Itis seen that the contrasting alleles segregate during meiosis and a phenotypic ratio of 1:1 is obtained, in contrast to the 3:1 Mendelian ratio. Similarly, a ratio of 1:1:1:1 is obtained when two pairs of genes are considered instead of the 9:3:3:1 ratio. hence, option (d) is correct |
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