Mutations are important to the evolution of a species because they
a. accelerate the transcription rate of DNA
b. are a source of genetic variability
c. happen over the long period of time that evolution requires
d. cut out and replace damaged or useless genes
Ans: b. are a source of genetic variability
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Heritability in non-scientific terms means "the capability of being inherited or being passed on by inheritance"; this is a very accurate description of the inheritance of a complex trait
A. true B. false
Briefly describe the ventral body cavities and the major organs they contain.
What will be an ideal response?
The ____ gland(s) secrete(s) thyroid stimulating hormone (TRH)
a. thyroid b. parathyroid c. thymus d. hypothalamus e. anterior pituitary
What is represented by the part of the figure labeled as “B”?
a. normal tissue b. cancerous tissue c. adipose tissue d. lymph nodes e. red blood cells