Which hormone is responsible for the enlargement of the mammary glands during pregnancy?

a. estrogen
b. luteinizing hormone
c. oxytocin


d. progesterone
e. prolactin


ANSWER: e

Biology & Microbiology

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A major biological paradox is that genes are generally highly conserved and yet  

A.  there is very little difference among life forms existing today. B.  there is so much diversity among life forms existing today. C.  there are a huge number of ancestral genomes no matter how far back we look. D.  there are essentially identical development patterns in all species. E.  there is very little research into genomic sequences.

Biology & Microbiology

Two genes are on the same chromosome, yet crossing over occurs between them every time meiosis occurs. Are these

genes linked or unlinked and why?

What will be an ideal response?

Biology & Microbiology

What organ aids in the camouflage of a fish by making the ventral surface light?

a. Chromatophores b. Epiphores c. Photophores d. Mesophores

Biology & Microbiology

Open (compound)

What will be an ideal response?

Biology & Microbiology