Wetlands remove toxins, pesticides, and sediments from water, acting as a natural water purifier
Indicate whether the statement is true or false
TRUE
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The data below shows recombination of genes (1-5) according to the amount of time available for transfer of the bacterial chromosome during conjugation between different genetic strains in E coli. Based on these data, which gene is closest to gene 1? (Note: The entire chromosome is transferred in 100 minutes.)
A. gene 2
B. gene 3
C. gene 4
D. gene 5
Which of the following sequences could be cut by a restriction enzyme?
A. ACAAGA B. AATTACC C. CATTAC D. ACTACT
In Drosophila, a developmental mutation called ssa (spineless aristapedia) results in flies with mini leg parts on the antennae. What kind of gene is this mutation?
A) gap gene B) pair-rule gene C) homeotic gene D) segment polarity gene E) maternal effect gene
In the digestive system, peristalsis is _____
A) a process of fat emulsification in the small intestine B) voluntary control of the rectal sphincters regulating defecation C) the transport of nutrients to the liver through the hepatic portal vessel D) smooth muscle contractions that move food along the esophagus