Two forms of hemophilia are determined by genes on the X chromosome in humans. Assume that a phenotypically normal woman whose father had hemophilia is married to a normal man. What is the probability that their first daughter will have hemophilia?

A) zero
B) 1/2
C) 1/4
D) 1/3
E) 100%


Answer: A

Biology & Microbiology

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Consider a living plant cell in a living leaf that is not wilted. The pressure potential (?P) of such a cell

____ than that in the fluids surrounding the cell.

a. is typically lower b. varies widely from higher to lower c. is typically higher d. is typically about the same as e. is typically more negative

Biology & Microbiology

The electron transfer chain is located

a. on the inner membrane of the mitochondria. b. on the inner membrane of the chloroplasts. c. in the fluid part of the chloroplast. d. throughout the cytoplasm of the cell. e. on the plasma membrane of eukaryotes

Biology & Microbiology

One of the findings of the human genome project is that humans vary by

a. introns. b. exons. c. SNPs. d. codons. e. deviant bases.

Biology & Microbiology

If a chloroplast coding sequence has been transferred to the nuclear genome, but the protein product is needed in the chloroplast, what must be added to the original polypeptide sequence?

What will be an ideal response?

Biology & Microbiology