Give the sex-chromosome constitution (X and Y chromosomes) and possible genotypes of offspring resulting from a cross between a white-eyed female (Xw XwY) and a wild-type male (normal chromosome complement) in Drosophila melanogaster

Include all zygotic combinations whether viable or unviable.


X+XwXw = unviable (dies at third instar stage)
XwXwY = white-eyed female
X+Y = wild-type male
YY = unviable (dies at egg stage)
X+XwY = wild-type female
XwYY = white-eyed male
X+Xw = wild-type female
XwY = white-eyed male

Biology & Microbiology

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. The more severe form of African sleeping sickness is called the

A. Gambian form. B. Rhodesian form. C. Guyanan form. D. Brazilian form

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A woman is diagnosed to have a gene for the genetic

disorder known as Huntington disease. It is a rare defect caused by an autosomal dominant allele. The chance for any one of her children to inherit the gene is a. dependent on the sex of the child. b. 1/3. c. 1/2. d. 3/4. e. 1.00 (or 100 percent).

Biology & Microbiology

pH 8 and above solution is.

a. acidic b. basic c. neutral

Biology & Microbiology

Solvent

What will be an ideal response?

Biology & Microbiology