When the wall of the stomach fails to protect itself from erosion by gastric juice, the result is ________
A) heartburn
B) obesity
C) GERD
D) a gastric ulcer
D
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The type of plant hormone primarily responsible for promoting the formation of lateral roots is/are ____
a. jasmonates b. gibberellins c. auxins d. systemin e. cytokinins
In order for DNA molecules to undergo
recombination, a. they must be from the same species. b. their strands must separate as in replication. c. they must be cut and spliced at specific nucleotide sequences. d. one of the two DNA strands must be degraded. e. they must first be transcribed.
_____ are responsible for blood clotting.
a) Sarcomeres b) Leukocytes c) Erythrocytes d) platelets
For each statement below, indicate whether it is true or false, and explain why
A. To meet a challenge or develop a new function, evolution essentially builds from first principles, designing from scratch, to find the best possible solution. B. Nearly every instance of DNA duplication leads to a new functional gene. C. A pseudogene is very similar to a functional gene but cannot be expressed because of mutations. D. Most genes in vertebrates are unique, and only a few genes are members of multigene families. E. Horizontal gene transfer is very rare and thus has had little influence on the genomes of bacteria.