A true breeding black rabbit is crossed with a true breeding white rabbit to produce an F1 generation of 8 individuals. If the black color trait is dominant, which of the following represents the expected phenotype of an F1 generation cross?
A. 8 black rabbits, 0 white rabbits, 0 grey
rabbits
B. 2 black rabbits, 2 white rabbits, 4 grey
rabbits
C. 0 black rabbits, 0 white rabbits, 8 grey
rabbits
D. 4 black rabbits, 2 white rabbits, 2 grey
rabbits
E. 6 black rabbits, 2 white rabbits, 0 grey
rabbits
A
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The insect symbiont Wolbachia can be used to suppress disease transmission by mosquitoes because
A) Wolbachia supplies essential nutrients to the mosquito Culex quinquefasciatus. B) only Wolbachia-infected mosquitoes can transmit viral diseases such as dengue fever. C) Wolbachia infections can spread rapidly through a mosquito population, killing all the mosquitoes. D) Wolbachia-infected male mosquitoes sterilize uninfected female mosquitoes.
Cells can be described as having a cytoskeleton of internal structures that contribute to the shape, organization, and movement of the cell. All of the following are part of the cytoskeleton except
a. the nuclear envelope. b. microtubules. c. microfilaments. d. intermediate filaments. e. actin.
Describe four comparative differences between New World and Old World monkeys. What will be an ideal response?
Recombinant DNA technology is also known as
A. mutagenesis. B. nanotechnology. C. genetic engineering. D. artificial selection.