During the process of gel electrophoresis, the DNA fragments migrate due to the effects of ____
a. gravity
b. vibrations
c. electrical charge
d. magnetic attraction
e. centrifugal force
c
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Why is De Queiroz's general lineage species concept receiving significant support? Select all that apply.
_____ It includes criteria from all other species concepts. _____ Many scientists would like to have a single, agreed upon species concept. _____ It is not meant to be used for extinct species. _____ It can incorporate molecular, ecological, and morphological factors into a single species concept. _____ It presents clear rules on the number of differences needed to qualify two populations as two distinct species.
The two pancreatic hormones that control the flow of energy during the three phases of energy metabolism are:
(a) glucagon and secretin (b) thyroxine and insulin (c) inhibin and glucagon (d) insulin and glucagon
Homo floresiensis is a relatively new find of fossils from:
A) Africa. B) Australia. C) Indonesia. D) Europe.
Select all of the choices that apply to a gene carrier.
a. possesses but does not express the allele in question b. typically has a homozygous dominant genotype c. typically has a heterozygous genotype d. typically has a homozygous recessive genotype e. both possesses and expresses the allele in question