Sex Determination in Plants

What is Sex determination? How can we determine the sex in Plants?

Expert Solution

Sex determination in plants:

Most angiosperms are hermaphrodite, flowers contain both male and female organs.
However, in some species male and female flowers are borne on separate plants (dioecious).
One plant genus in which the chromosomal basis of se determination has been worked out is Melandrium (Campion).
Here the ratio of X Y chromosomes is the important factor in determining whether plants produce male or female flowers.
This implies that genes on both of the sex chromosomes interact to produce the sex phenotype.
Studies of plants that had radiation-induced deletions in X or Y chromosomes showed that the Y chromosome contains regions that repress female development and induce male development, whereas the X chromosome has regions that stimulate development of female flowers.

Sex Determination:

The sex-determination system is a biological system which determines the development of sexual characteristics in an organism

Suhasini Buddi answered 2 years ago

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