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In a mating between a red-eyed male fruit fly and a red-eyed heterozygous female

Shonterria

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8 years ago

In a mating between a red-eyed male fruit fly and a red-eyed heterozygous female

virtual lab journal and table for sex linked traits

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duddy

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Staff Member

8 years ago

All (100%) of the females will have red eyes.
50% of the males will have red eyes; 50% white eyes.

It's a sex-linked trait.

Fifty percent of the females are expected to be carriers. This was determined by performing a genetic cross using a Punnett square to determine the genotypes of the offspring. A red-eyed male (XRY) was crossed with a red-eyed female carrier (XRXr). The genotypes that resulted were: 1 XRXR:1 XRXr:1 XRY:1 XrY. One out of two, or 50 percent, of the females are carriers.

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