If the frequency of a particular allele that is present in a small, isolated population of alpine plants decreases due to a landslide that leaves an even smaller remnant of surviving plants bearing this allele, then what has occurred?
A) a bottleneck
B) genetic drift
C) microevolution
D) A and B only
E) A, B, and C
Ans: E) A, B, and C
You might also like to view...
Commercially available skin substitutes are made from ________
a. living adult donor skin b. human embryos donated through fertility clinics c. infant foreskins d. cadaver skin
Place the following in developmental order beginning with the earliest event
1) limb buds appear 2) face begins to look human 3) muscles differentiate 4) downy hair covers the fetus 5) sex can be determined by external inspection a. 3, 1, 2, 4, 5 b. 1, 3, 4, 2, 5 c. 1, 3, 2, 5, 4 d. 1, 2, 3, 4, 5 e. 1, 3, 5, 2, 4
A progression of population changes that are tied to a region's industrial development and the economic well-being of its citizens is referred to as
A) replacement rate. B) succession. C) MICs. D) population resistance. E) demographic transition.
Gene therapy involves:a
replacing all mutant alleles in body cells. b. replacing poor copies of alleles with normal alleles. c. replacing a mutant allele in certain body cells with a normal allele. d. repairing mutant alleles in certain body cells. e. improving gene expression in key body cells.