Albinism is a recessive trait controlled by a single gene. If the frequency of albinos in a population is 0.25, what is the expected frequency of heterozygotes for this trait?
a. 0.25
b. 0.50
c. 0.75
d. 0.90
e. 1.00
a
Biology & Microbiology
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With regards to mode of disease transmission, respiratory pathogens are generally ________, and intestinal pathogens are generally spread by contaminated ________
A) spread by direct contact / vectors B) spread by indirect contact / carriers C) more transmissible / needles D) airborne / food or water
Biology & Microbiology
Which of the following occurs during systolic pressure?
a. The ventricles contract. b. The atria contract. c. Both the ventricles and atria contract. d. The heart is at rest.
Biology & Microbiology
How many different alleles can a gene have?
What will be an ideal response?
Biology & Microbiology
For a given locus, in a population with two alternative alleles, the allele frequencies p + q = ________
A) 1.0 B) p × q C) 100 D) 0
Biology & Microbiology