In the following pedigree, the indicated trait is caused by what type of allele?
A) autosomal recessive
B) autosomal dominant
C) X-linked recessive
D) X-linked dominant
E) Y-linked
E) Y-linked
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In early ancestors of the modern giraffe, longer necks allowed animals to reach higher tree branches as food. This would lead to ____ in the ancestral giraffe population.
A. disruptive selection B. directional selection C. sexual selection D. genetic drift E. stabilizing selection
In this study, genetic susceptibility likely means
a. the dogs’ genes are promoting cancer. b. they do not have any functional tumor suppressor cells. c. that additional mutations occur very quickly, leading to cancer. d. there is a mutation in one of the genes associated with cell division
_____is an autoimmune disease in which T cells initiate a cell-mediated response targeting the myelin in the brain and spinal cord.
A. Epstein–Barr B. Severe combined immune deficiency (SCID) C. Multiple sclerosis (MS) D. Muscular dystrophy E. Huntington’s disease
The study of matching different sets of DNA based on the number of short tandem repeats is called ________
Fill in the blank(s) with correct word