The letter "C" above represents
a. uterus.
b. ovary.
c. vagina.
d. urinary bladder.
e. pelvic girdle
A
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The chance of a child having albinism when both of his parents are heterozygous for the disorder is ____ percent
a. 0 b. 25 c. 33 d. 50 e. 75
According to your text, corporate chains are causing the monthly closure of over 50 ________ in Britain
A) villages B) schools C) specialist shops D) hospitals E) farmers markets
Hemophilia A is an X-linked recessive genetic condition. In humans it is due to a mutation in the F8 gene, which encodes a protein called coagulation factor VII. Coagulation factors are proteins important in blood clotting. Individuals with hemophilia, when injured, bleed longer than a normal, healthy individual; the inability to normally clot blood can be life threatening. Hemophilia is much more common in males than in females. Which of the following does NOT explain why this is so?
A. A female with one defective allele makes enough normal coagulation factor VII to clot blood and will not have hemophilia A B. Males are hemizygous for the F8 gene, so they will have hemophilia A if they have one defective allele C. Females have to receive a defective allele from both their mother and their father to get hemophilia A D. Males have to receive a defective allele only from their father to get hemophilia A
Of the following, which event occurs first in
the light-dependent reactions of photosynthesis?
a. hydrolysis of water. b. synthesis of sugar. c. ejection of an electron from chlorophyll. d. manufacture of ATP. e. synthesis of NADPH