The spiral valve is a specialized structure found within:

a. bony fishes.
b. sharks.
c. sea turtles.
d. lampreys.
e. sea birds.


B

Biology & Microbiology

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A single nucleotide polymorphism (SNP) and a point mutation are the same thing

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Which of the following does NOT occur in the

first three months of development?

a. formation of a heart b. disappearance of the tail c. formation of internal organs d. detection of movement of the fetus e. segmentation and development of somites

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The only completely effective method of birth control is ________

Fill in the blank(s) with correct word

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Which of the following indicates the correct sequence of mammalian egg coverings, beginning at the outside and

moving inward? a. plasma membrane, jelly coat, zona pellucida b. zona pellucida, vitelline envelope, plasma membrane c. vitelline envelope, plasma membrane, jelly coat d. granulosa cells, zona pellucida, plasma membrane e. zona pellucida, granulosa cells, plasma membrane

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