Compare and contrast the chromosome structure of viruses, bacteria, and eukaryotes
What will be an ideal response?
The amount of DNA per structure (virus particle, bacterium, cell) increases as one goes from viruses to eukaryotic cells. Viral chromosomes may be composed of single-stranded or double-stranded RNA or DNA, whereas bacterial and eukaryotic DNA is double-stranded. Bacterial DNA is considered to be a covalently closed circle; the "global" structure of eukaryotic chromosomes is uncertain. Although some proteins are associated with viral and bacterial DNA, the regularly spaced histones of eukaryotic chromosomes are unique.
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Pattern baldness is an example of a(n)
a. sex-linked trait. b. sex-influenced trait. c. sex-limited trait. d. sex-exclusive trait. e. inactivation trait.
In a contracted sarcomere, ____
a. there is little overlap of actin and myosin b. the Z lines are close together c. the sarcomere length has increased d. power strokes are inhibited e. the overall muscle is relaxed
The phenotypic, gonadal, and chromosomal sex are always consistent. Indicate whether the statement is true or false
________ is the most common form of nitrogen exported from terrestrial ecosystems in stream water
Fill in the blank(s) with correct word