Whole blocks of genes that have been copied from one chromosome to another are referred to as
A. multigene families.
B. segmental duplications.
C. codons.
D. tandem clusters.
Answer: B
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You breed a black, long-haired rabbit with a white, short-haired rabbit. All of the offspring have long, black hair. If the genes for hair color and length are linked, what would be a possible ratio for the F2 population?
A. 5 long-haired black, 4 short-haired white, 1 short-haired black, 2 long-haired white B. 3 long-haired black, 1 short-haired white, 1 short-haired black, 3 long-haired white C. 5 long-haired black, 4 short-haired white, 5 short-haired black, 4 long-haired white D. 1 long-haired black, 1 short-haired white, 1 short-haired black, 1 long-haired white E. 1 long-haired black, 2 short-haired white, 5 short-haired black, 4 long-haired white
Recognition of self versus non-self is accomplished by ____
a. macrophage function b. complement system activation c. B and T cell cloning d. the presence of MHC markers on cell membranes e. memory cell formation
Genomic imprinting is a result of ___________
A. Nucleosome location B. Histone activation C. DNA methylation D. Serine to leucine changes in the genetic code
The portion of the genome that encodes proteins is called the ____________________
Fill in the blank(s) with correct word