Which of the following is a zygotic gap gene in Drosophila?
A) knirps (kni)
B) even-skipped (eve)
C) caudal (cad)
D) hedgehog (hh)
A) knirps (kni)
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Certain species are very sensitive to disturbances to their environment, and therefore, can be used as an early warning system for environmental degradation that might not otherwise be noted. What are these species called?
a. keystone species b. invasive species c. indicator species d. island species e. adaptive species
Which of the following is in contact with the soil into
which it is growing? a. vascular cylinder b. apical meristem c. root cap d. pericycle e. outer cortex
Enzymes are a type a _____, which reduces the activation energy of a chemical reaction.
Fill in the blank(s) with the appropriate word(s).
DNA replication proceeds in one direction around the bacterial chromosome.
Answer the following statement true (T) or false (F)