List two possible benefits of living in a group
What will be an ideal response?
Possible answers include predator detection, defense, and rearing the young.
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If a man expresses an X-linked recessive trait, ____
a. all of his brothers will also express it b. his father transmitted the trait to him c. his father carried the trait d. all of his sisters will also express it e. his mother was heterozygous or homozygous for the trait
Rous sarcoma virus was identified when a scientist discovered that a virus passing between chickens was causing their tumors. The genome of this retrovirus includes the src gene, which encodes a tyrosine kinase that functions in signaling pathways leading to proliferation. The src gene is a
A) cyclin. B) proto-oncogene. C) reverse transcriptase. D) tumor-suppressor gene.
AFTER SURVIVING A BOTTLENECK, A POPULATION RECOVERS THE POINT WHERE IT CONSISTS OF AS MANY INDIVIDUALS AS IT DID PRIOR TO THE BOTTLENECK. WHICH OF THE FOLLOWING IS MOST LIKELY TO APPLY TO THE POPULATION?
A. THE BOTTLENECK POPULATION EXHIBITS LESS GENETIC VARIATION THAN PREBOTTLENECK POPULATION B. BOTTLENECK POPULATION SUBJECTED THE POPULATION TO STABILIZING SELECTION. C. POSTBOTTLENECK POPULATION HAS LESS OF CHANCE OF GOING EXTINCT THAN PREBOTTLENECK D. POSTBOTTLENECK POPULATION EXHIBITS MORE GENETIC VARIATION THAN PREBOTTLENECK
The technique initially used in the identification of promoter sequences was ________
Fill in the blank with correct word.