A dihybrid cross is a mating between two individuals that are each ______________ for ___________ gene (genes).
a) homozygous, one
b) homozygous, two
c) homologous, two
d) heterozygous, one
e) heterozygous, two
Answer: e) heterozygous, two
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In examining a multicellular protist, you notice that it uses pseudopods to engulf its food, that it reproduces asexually by mitosis, and that it has multiple nuclei
These data allow you to infer that the species belongs to which of the following protist groups? A) Euglenida B) Diatoms C) Foraminifera D) Diplomonadida E) Parabasalida
In general, the cold-dwelling thaumarchaeotes are evolving more slowly than the hyperthermophilic crenarchaeotes
Indicate whether the statement is true or false.
A cell contains 30% solute, while the external environment contains 10% solute. What kind of solution is this cell sitting in?
a. hypotonic b. isotonic c. hypertonic d. osmotonic
Red muscle fibers produce ATP mainly by aerobic respiration and their bright red color comes from ____
a. blood b. hemoglobin c. carbon dioxide d. sarcomeres e. myoglobin