If you found the same number of short tandem repeats at three different locations in two samples of DNA, what would you conclude?
A) Both samples were from females.
B) Both samples were from males.
C) The two samples were most likely from the same individual.
D) The two samples were from different individuals.
Answer: C
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The water vascular system in echinoderms is used for locomotion, water enters the water vascular
system of a sea star through a structure called the
a. ampulla. b. ossicle. c. radial canal. d. ring canal. e. madreporite.
In early Drosophila development, which of the following forms first?
a. segmented larva b. pupa c. syncytial blastoderm d. blastocyst e. cellular blastoderm
Ecologists today largely subscribe to the concept of the climax as a closed system, as espoused by F. E. Clements.
a. true b. false
The position of a cell within an embryo during embryonic development determines ________________.
A. which genes will be knocked out B. the gender of the embryo C. whether the cell will differentiate D. which master genes are turned on E. whether maternal mRNAs will be translated