Male gonads are __________, which produce sperm
and the sex hormone __________.
Fill in the blank(s) with the appropriate word(s).
Answer: testes; testosterone
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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.
Organic molecules consist mostly of _____ atoms
a. carbon c. carbon and hydrogen b. carbon and oxygen d. carbon and nitrogen
Monocytes and lymphocytes are agranular leukocytes.
Answer the following statement true (T) or false (F)
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.