In humans, the allele for red-green color blindness is X-linked and recessive (Xr; the dominant allele is called XR). A man with normal color vision marries a color-blind woman who gives birth to a color-blind daughter

What can be inferred from this information? A) The woman is XRXr.
B) The man must be a carrier for the color blindness allele.
C) The daughter must be heterozygous.
D) The man is probably NOT the father of the daughter.


D

Biology & Microbiology

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A cell that lacks sulfite oxidase but can still oxidize sulfur for energy could be identified by

A) adenosine phosphosulfate reductase coupled with substrate-level phosphorylation. B) electrons being transferred to cytochrome c prior to shuttling them into the electron transport chain. C) identifying an alternative quinone, flavoprotein, or cytochrome. D) quantifying the release of sulfate byproduct.

Biology & Microbiology

It is believed that the surfaces upon which the first nucleic acids were able to form were made of:

A. limestone B. clay C. granite D. diamond E. sand

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If you placed a red blood cell in a hypotonic solution, you would predict that its volume would ____ while the solute concentration in its cytoplasm would ____.

A. increase, increase B. increase, decrease C. decrease, increase D. decrease, decrease E. decrease, not change

Biology & Microbiology

Which of the sperm cells from the translocation carrier shown on the previous slide would produce a normal zygote if paired with a normal ovum?

1.A 2.B 3.C 4.D 5.E 6.F

Biology & Microbiology