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4.Principles of Inheritance and Variation
normal
The first plant in which chromosomal basis of sex determination was discovered is
A
Melandrium $(Lychnis)$
B
Rumex
C
Sphaerocarpus
D
Coccinia
Solution
(a) In melandrium, the sex is determined by the $Y$-chromosome, when $Y$ chromosome is present, the sex is male. When $Y$ is absent, the sex is female.
Standard 12
Biology