If a gene has three alleles in a population, their frequencies must add up to ________
A) 1.0 B) 0 C) 3.0 D) 1.5
Answer: A
Biology & Microbiology
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Based on comparisons of many human DNA sequences, our level of DNA variation is ____
Fill in the blank with the appropriate word.
Biology & Microbiology
What is the ultimate source of a new allele in a gene pool?
a. natural selection b. mutation c. gene flow d. genetic drift
Biology & Microbiology
Which hormone causes contraction of the uterus?
a. cortisol b. oxytocin c. prostaglandins d. progesterone e. estrogen
Biology & Microbiology
From which of the following fish are the amphibians thought to have evolved?
a) Class Myxini b) Class Actinopterygii c) Class Sarcopterygii d) Class Chondrichthyes e) Class Cephalaspidomorphi
Biology & Microbiology