In his experiments, Mendel noted that when two traits are involved in a genetic cross, they are inherited independently of each other. The reason for this is that
A) genes on the same chromosome separate during the formation of gametes.
B) alleles on the same gene separate during the formation of gametes.
C) genes on different chromosomes separate during the formation of gametes.
D) alleles on the same chromosome separate during the formation of gametes.
E) chromosomes often recombine.
C
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P1 bacteriophage can be used as an experimental vehicle to move genes from one cell to another because occasionally large pieces of host DNA are accidently packaged into phage heads. What is this process called?
A. lysogeny B. bacterial transduction C. phase variation D. transposition E. cointegration
What are signaling molecules that are used by cells of the immune system to communicate with each other?
a. complement b. neurotransmitters c. hormones d. cytokines e. PAMPs
You work in a lab that studies bird brains and behavior. You and your labmate have both submitted brains to a colleague to be sectioned. Your species is a bird that is known for storing large numbers of nuts each autumn in a variety of hidden locations. Your labmate's species is a raptor known for remarkable predatory behavior. What do you anticipate will be different between the two brains?
A. Your nut-hiding species is likely to have a large hypothalamus, while the raptor may have an large olfactory system. B. Your nut-hiding species is likely to have a large hippocampus, while the raptor may have a large visual system. C. Both species are likely to have a large nucleus accumbens. D. Your nut-hiding species is likely to have a large visual system, while the raptor may have an large hippocampus.
Zombies are not really living because they cannot reproduce. Living organisms must be able to reproduce.
a. true b. false