Male gonads are __________, which produce sperm

and the sex hormone __________.
Fill in the blank(s) with the appropriate word(s).


Answer: testes; testosterone

Biology & Microbiology

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Organic molecules consist mostly of _____ atoms

a. carbon c. carbon and hydrogen b. carbon and oxygen d. carbon and nitrogen

Biology & Microbiology

Monocytes and lymphocytes are agranular leukocytes.

Answer the following statement true (T) or false (F)

Biology & Microbiology

The introduction of a few individuals into a new habitat that is unoccupied by other members of the species is a(n)

A) temporal isolation. B) founder event. C) adaptive radiation. D) limited speciation. E) extinction.

Biology & Microbiology

A deletion of a particular stretch of chromosome 15 can cause either Prader-Willi syndrome or Angelman syndrome, depending on  

A.  the parental origin of the normal and deleted chromosome. B.  whether or not the region is methylated properly. C.  whether a translocation event has occurred. D.  whether a nondisjunction event has occurred.

Biology & Microbiology