Please help me answer the following biology questions! Thank you! You Caught a D

Question

Please help me answer the following biology questions! Thank you!

You Caught a Drosophila female in your backyard. She did not look normal. Her bristles were much shorter than those of wild type Assume that she mated with a wild type male. You let her lay eggs in of culture vial Two weeks later. you observed her offspring. A half of them had short bristles just like her regardless of sexes. Her mutation is recessive dominant There is not enough information You caught a Drosophila female m your backyard. She did not look normal. Her bristles were much shorter than those of wild type tiles. Assume that she mated with a wild type male. You let her lay eggs in a culture vial. Two weeks later, you observed her offspring A half of them hid short bristles just like her regardless of sexes. Her mutation is: X-honked recessive autosomal dominate X-linked dominant autosomal recessive There is not enough information

Explanation / Answer

Questions 31 and 32 are the same.

The mutation is X linked recessive. Here half of the offspring are like the female parent.

Assuming the female to be short bristles which is recessive

short bristles (XwXw) × long bristles (XWY)

/

Xw

Xw

XW

XW Xw

XW Xw

Y

XwY

XwY

Here half the offspring are with short bristles and half are with long bristles.

In the other case

long bristles (XWXW) × short bristles (XwY)

/

XW

XW

Xw

XW Xw

XW Xw

Y

XWY

XWY

Here all the offspring would be with short bristles.

/

Xw

Xw

XW

XW Xw

XW Xw

Y

XwY

XwY

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