Answer:
True
Explanation:
The Drosophila like the mammals possess X and Y chromosomes but as in males in which the XX is female and XY is male, the sex In Drosophila is not determined by the presence of Y chromosomes as a male determining factor are present on the autosomes.
However, the Y chromosome is important for males as they are involved in the formation of the sperms therefore the presence of Y is important. In the given question if the allele is present ion the Y chromosome which can reduce the size therefore the allele is passed on to the males only ans no females.
Thus, true is the correct answer.
the fly is female (Bridges 1921, 1925). Thus, XO Drosophila are sterile males. In flies, the Y chromosome is not involved in determining sex. Rather, it contains genes active in forming sperm in adults.
Answer:
Which DNA is restricted to making a genomic library? Explanation: Total genomic DNA of an organism is digested using restriction endonuclease and the fragments are inserted into a suitable phage
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Answer: The impact of the colliding plates can cause the edges of one or both plates to buckle up into a mountain ranges or one of the plates may bend down into a deep seafloor trench.
Explanation: A chain of volcanoes often forms parallel to convergent plate boundaries and powerful earthquakes are common along these boundaries.
Answer: Genetic Variation
Explanation: It is the presence of differences in sequences of genes between individual organisms of a species.
