Which components of speciation would be least likely to be part of punctuated equilibrium?
a. ongoing gene flow among all individuals
b. a division of populations
b. a change in environmental conditions
d. a large number of mutations taking place at once
a. ongoing gene flow among all individuals
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Given what you now know, what information is most likely to produce the correct answer?
What will be an ideal response?
The primordial soup is not organic-rich
a. True b. False Indicate whether the statement is true or false
Circulatory systems have the primary benefit of overcoming the shortcomings of
A) temperature differences between the lungs and the active tissue. B) the slow rate at which diffusion occurs across cells. C) communication systems involving only the nervous system. D) having to cushion animals from trauma. E) fetal organisms maintaining an optimal body temperature.
A genetic disease that causes death in infancy and has an autosomal recessive inheritance pattern can persist in a population because: Check all that apply.
A. If both parents are carriers, they have a 50% chance of having normal children. B. Individuals with one abnormal allele do not show symptoms of the disease. C. Only homozygotes for the abnormal allele will have the disease. D. It can be passed on to the next generation by a heterozygous carrier.