Which of the following is NOT found in an arteriole?
a. elastic layer
b. basement membrane
c. rings of smooth muscle
d. valve
e. endothelium
Answer: d
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Viruses transmit bacterial genetic material from one bacterium to another in a type of horizontal gene transfer referred to as ____
Fill in the blank with the appropriate word.
Determining the exact nucleotide sequence of a gene or gene fragment obtained from an unknown organism is based on which of the following methods?
a. Hybridization b. Sequencing c. Amplification (PCR) d. Genotypic
Which of Mendel's laws explains why the segregation of alleles for a gene on one chromosome does not influence the segregation of alleles for a gene on another chromosome?
A. law of population dynamics B. law of segregation C. law of random fertilization D. law of crossing-over E. law of independent assortment
The epiglottis of a human covers the glottis when he or she is
A) talking. B) breathing. C) swallowing. D) yawning. E) sleeping.