The human Prader-Willi and Angelman diseases result from
a. mutated demethylase genes.
b. deletion of a gene that controls X-inactivation.
c. deletion of a region that controls gene imprinting.
d. prions.
e. gene duplication that causes overexpression of a methyltransferase.
Ans: c
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________ is the process by which close ecological interactions cause two species to evolve jointly
a. Coevolution b. Adaptive radiation c. Exaptation d. Extinction
Tall corn plants (T) are dominant to dwarf plants (tt). Solid green leaves (G) are dominant to leaves with a white tip (gg). A cross between two corn plants yielded the following phenotypes: 51 tall plants with a white tip on their leaves; 43 dwarf plants with solid leaves; 48 dwarf plants with white tips on their leaves; 45 tall plants with solid leaves. What are the genotypes of the parents
that produced these plants? a. TtGg x TtGg b. TtGg x Ttgg c. ttGG x TTgg d. TtGg x ttgg e. None of the above
To preserve epigenetic memory in the daughter cells, the cell retains these "old" proteins during DNA replication
What will be an ideal response?
Using today’s genetic technology, it is possible to select ____________________ for specific traitsFill in the blank(s) with the appropriate word(s)