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
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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
Briefly define what is meant by negative and positive control of the lac operon
What will be an ideal response?
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.
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