Where is the trachea in reference to the esophagus in humans?
a. dorsal, or behind
b. superior, toward the head
c. ventral, or in front
d. inferior, toward the feet
c. ventral, or in front
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Chromosomes inside the nucleus do not overlap with each other because
A. chromosomes are repelled from each other by their negative charges. B. they all have a specific chromosome territory that is determined by the nuclear matrix. C. the histone tails of the nucleosomes are repelled from each other by their negative charges. D. the chromosomes are highly compacted by the formation of radial loop domains. E. localized regions of the chromosomes are heterochromatic.
Distances between linked genes in centimorgans (cM) can be converted directly to the physical distances between them on the chromosome
a. True b. False Indicate whether the statement is true or false
Which of these is the most diverse group of plants?
a. gymnosperms b. ferns c. nontracheophytes d. angiosperms e. conifers
All proteins consist of _____.
A) DNA molecules B) RNA molecules C) triglyceride chains D) polypeptide chains