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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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
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.