In Drosophila, Assume That the Gene for Scute Bristles (S)

question 10

Essay

In Drosophila, assume that the gene for scute bristles (s) is located at map position 0.0 and that the gene for ruby eyes (r) is at position 15.0. Both genes are located on the X chromosome and are recessive to their wild -type alleles. A cross is made between
scute -bristled females and ruby -eyed males. Phenotypically wild -type F1 females were then mated to homozygous double mutant males, and 1000 offspring were
produced. Give the phenotypes and frequencies expected.

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Definitions:

Stress Incontinence

Stress incontinence is the involuntary leakage of urine during activities that increase intra-abdominal pressure, such as coughing, sneezing, or lifting, due to weakened pelvic floor muscles.

Urge Incontinence

A condition characterized by the sudden, intense need to urinate followed by an involuntary loss of urine.

Oliguria

A condition marked by an abnormally low output of urine, often signaling kidney dysfunction or severe dehydration.

Postoperative

Relating to the period after surgical procedures when patient care and monitoring are critical for recovery.