Chromosomes that determine male sex in $M e l a n d r i u m$ plant is

Y chromosome

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X chromosome

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XX chromosome

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None of the above

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Solution

The correct option is A Y chromosome
In Melandirum, 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. Melandrium albumalbum is a dioecious species showing a clear-cut correlation between the phenotypic sex and the presence of heteromorphic sex chromosomes. Thus, the correct answer is option A.

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Similar questions

	List I		List II
A	In human beings and a number of other animals, there are two types of chromosomes, ______, and allosomes.	1	44+XY
B	_______ are those chromosomes which control functions of the body, other than sex determination. Allosomes or sex chromosomes are the chromosomes that determine the sex of the individual in unisex organisms.	2	Autosomes
C	Human beings have _____ pairs of chromosomes.	3	23
D	_____ determine the sex of the individual.	4	Sex chromosomes
E	The two sex chromosomes of females are similar and are called _____ chromosomes. They are dissimilar in human males. One is a normal-sized X-chromosome. The other is smaller with a good amount of non-function chromatin. It is called the Y-chromosome.	5	XX
F	The chromosome complement of human females is ______	6	44+XX
G	Human males is _____. Human females are homogametic, i.e., produce only one type of gametes or ova (22 + X). Humans are heterogametic, i.e., they produce two types of gametes sperms, angiosperms, and gymnosperms.	7	Autosomes

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