Hemophilia is an X-linked recessive gene. A normal woman whose father had hemophilia marries a

normal man. What are the chances of hemophilia in their children? What will be an ideal response?


All females normal but 1/2 of them would be carriers; 1/2 of the males would have hemophilia, the
other 1/2 normal

Biology & Microbiology

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What function does a clitellum serve?

a. anchoring an animal to its substrate b. digestion c. cushions organs d. glues two organisms together for sperm exchange e. keeps blood from clotting

Biology & Microbiology

Briefly define what is meant by negative and positive control of the lac operon

What will be an ideal response?

Biology & Microbiology

Cells become progressively committed to specific patterns of gene activity and developmental fate

through a process known as: a. morphogenesis. b. determination. c. cell differentiation. d. nonspecific differentiation. e. growth.

Biology & Microbiology

Where do the microtubules of the spindle originate during mitosis in both plant and animal cells?

A) centromere B) centrosome C) centriole D) chromatid E) kinetochore

Biology & Microbiology