Assertion: According to Bridges, the Y-c...

Assertion: According to Bridges, the Y-chromosome is responsible only for the fertility of sex and not for sex determination in Drosophila.
Reason: According to Bridges in Drosophila, autosomes are responsible for feminine characteristics.

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Compare the chromosomal mechanism of sex determination of Drosophila

Genic balance theory of sex determination in Drosophila has been proposed by Bridges. Sex is determined by the ratio of the X-chromosomes and the set of autosomes.

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Do the genes of the X and Y chromosomes determine only sex characteristics?

Sex determination by chromosome diffrence in man and Drosophila is by mechanism called :

Assertion: The presence of X or Y chromosome in the sperm determine the sex of the embryo Reason: All the eggs have one X chromosome.

Assertion: According to Bridges, the Y-chromosome is responsible only for the fertility of sex and not for sex determination in Drosophila. Reason: According to Bridges in Drosophila, autosomes are responsible for feminine characteristics.

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Assertion: According to Bridges, the Y-chromosome is responsible only for the fertility of sex and not for sex determination in Drosophila.
Reason: According to Bridges in Drosophila, autosomes are responsible for feminine characteristics.