If an individual with a dominant phenotype is crossed with an individual with a recessive phenotype, 4 of their 9 offspring show the recessive phenotype. What is the genotype of the dominant parent?
a) either Aa or aa
b) either AA or Aa
c) Aa
d) AA
e) aa
Ans: c) Aa
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What is the specific site of blood cell formation?
a. heart b. blood vessel walls c. red bone marrow d. compact bone e. yellow bone marrow
The work of Reznick and Endler with guppies shows
all of the following EXCEPT that a. life history traits can be inherited. b. life history traits evolve. c. life history traits can be altered over a short period of time. d. predation does not influence the modification of life history traits. e. life history traits are coded for in DNA.
Individuals with a genetic variant in the promoter region of the MAOA gene display violent behavior, independent of
environmental factors. a. True b. False
Which feature is not a characteristic of the animals?
A. embryonic development B. sexual reproduction C. multicellular heterotrophs D. cell walls