Using hair as the derived trait, four of the following organisms fit in the clade. Which one does not fit?
a. whale
b. crocodile
c. wolf
d. elephant
e. tiger
ANSWER: b
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Chlamydomonas, although a green algae, is sensitive to an antibiotic, erythromycin
If mt– mating-type alga that is sensitive is mated with an mt+ cell that is resistant, and if the mt+ strain donates chloroplasts, what results do you expect and why? A) All progeny are sensitive because sensitivity is the dominant trait. B) Approximately half the progeny are sensitive because this is the recessive trait. C) All the progeny are sensitive because this is the recessive trait. D) All progeny are resistant because cpDNA is responsible. E) Approximately half the progeny are sensitive because cpDNA is responsible.
Reproduction by mitosis only is asexual.
Answer the following statement true (T) or false (F)
You cut down a tree and count 23 annual rings in the trunk. You conclude that the tree is
A. probably 230 years old. B. most likely 23 years old. C. 46 years old. D. older than 46 years. E. This information does not tell the age of the tree.
____ allow passage of small molecules between cells
Fill in the blank(s) with the appropriate word(s).