The effect of directional growth shown in the
above figure is known to be caused by
a. thigmotropism.
b. gravitropism.
c. abscisic acid.
d. salicylic acid.
e. all of these.
B
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Tay-Sachs disease affects in 1 in 3,600 Ashkenazim births. The value of q2 is
A) 0.1. B) 0.05. C) 0.017. D) 0.0003.
_____ can use energy directly from the environment(e.g. the sun), while _____ need to actively seek out their energy sources. (Hint: what are the most general categories of organisms that do each one?)
Select all apply: A. Autotrophs B. Heterotrophs C. Herbivores D. Omnivores E. Detritivores
Each "word" in the mRNA code consists of how many letters?
a. 3 b. 4 c. 5 d. more than 5 e. 0
The arrangement of the chromosomes in metaphase I of meiosis is not important as long as homologues pair.
Answer the following statement true (T) or false (F)