A pure tall plant with green pods is crossed | vedclass

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Question

(C) In a dihybrid cross between a pure tall green plant $(TTGG)$ and a pure dwarf yellow plant $(ttgg)$,the $F_1$ generation will be heterozygous tall

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(C) In a dihybrid cross between a pure tall green plant $(TTGG)$ and a pure dwarf yellow plant $(ttgg)$,the $F_1$ generation will be heterozygous tall and green $(TtGg)$.When $F_1$ plants $(TtGg)$ are self-crossed,the $F_2$ generation follows the phenotypic ratio of $9:3:3:1$.The total number of combinations in the $F_2$ generation is $16$.The phenotypic categories are:$9$ Tall and Green$3$ Tall and Yellow$3$ Dwarf and Green$1$ Dwarf and YellowSince the question asks for the number of dwarf plants,we must consider both 'Dwarf and Green' $(3)$ and 'Dwarf and Yellow' $(1)$.Total dwarf plants = $3 + 1 = 4$.

$A$ pure tall plant with green pods is crossed with a pure dwarf plant with yellow pods. How many dwarf plants will be produced out of $16$ in the $F_2$ generation?

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