The narrowing of blood vessels is
A. vasoconstriction.
B. cardioconstriction.
C. vasodilation.
D. cardiodilation.
E. dilation.
A. vasoconstriction.
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If sixty snow geese were alive in 1926 and 856 existed in 2001, what is r?
A) 0.070 B) 0.035 C) 0.094
Gel electrophoresis separates DNA fragments based on:
A. nucleotide sequence. B. length. C. mutations. D. replication rate. E. primers.
Which conclusion is best supported by these data?
1.Infected children lived in areas with greater numbers of mosquitoes.
2.A higher number of mosquitoes were attracted to children that contained gametocytes.
3.Plasmodium secrete a chemical that mosquitoes can detect in the air.
4.Children without Plasmodium infection were least attractive to mosquitoes.
If a populations shows very little phenotypic variance for a trait, then that trait is probably controlled principally by the environment rather than genetics
Indicate whether the statement is true or false