Individuals who have a disease such as melanoma do not necessarily have offspring with melanoma. However, individuals with Huntington disease often do pass it on to their offspring. What accounts for the difference in the heritability of the two diseases?
What will be an ideal response?
The mutations associated with melanoma are typically in somatic cells, which are not passed to the offspring. The genes that cause Huntington disease are found in germ-line cells and are passed on from one generation to the next.
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Antimicrobial drugs that inhibit folic acid synthesis work with no side effects because mammals must get folic acid from their diet.
Answer the following statement true (T) or false (F)
The balance between osteoblast and osteoclast activities is an example of homeostasis and is regulated by the action of two hormones.
a. true b. false
What is another name for map unit?
a. linkage b. genotype c. locus d. centimorgan e. autosome
The body of a cnidarian is supported by a(n) hydrostatic skeleton
____________________ Indicate whether the statement is true or false.