In the population of 1,000 kangaroo rats shown here, what would you have expected the genotype frequency of Bb if the population was in Hardy-Weinberg equilibrium?
a) 0.867
b) 0.115
c) 0.231
d) 0.133
e) 1
Ans: c) 0.231
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Which of the following best explains this phenomenon?
There is a population of frogs living in a pond, 25 are green, 25 are brown, 25 are yellow with green spots and 25 are all yellow. A drought occurred and 75% of the frogs died. The remaining frogs were green and brown, after 25 generations the frogs still were green and brown, yellow frogs never appeared in the population again. A. Sexual selection. B. Balancing selection. C. Bottleneck effect. D. Heterozygote advantage. E. Founder effect.
What is separase?
A. a protein that is part of the cohesin complex B. a protein that marks a protein called securin for destruction C. a protein that destroys cohesin through its protease activity D. a protein that targets the mitotic cyclin for degradation
Fungi rapidly colonize leaves that fall into freshwater streams. They break down the cellulose in the leaves and absorb the glucose produced. In turn, the fungi serve as food for many insect species that consume the leaf litter; these insects cannot digest cellulose themselves, but gain the nutrients from cellulose indirectly. The insects then provide vital food for stream fish. Taken together, these relationships suggest that fungi __________
Fill in the blank(s) with the appropriate word(s).
Millipedes have a thousand legs whereas centipedes have only a hundred legs.
Answer the following statement true (T) or false (F)