Define segmentation and indicate how the annelids and your body exhibit this phenomenon.
Fill in the blank(s) with the appropriate word(s).
Segmentation is the division of the trunk into a series of similar segments. Annelids are composed of a series of segments that represent partitioning of the animal externally and internally. Arthropods are segmented with, generally, one pair of jointed appendages per body segment. Humans are fundamentally segmented. This is reflected internally by the series of similar ribs, intercostal muscles, and so on.
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The expression of only one allele of a gene and silencing of the other allele, all based on which parent
contributed each allele, is
a. sex-linked inheritance. b. uniparental inheritance. c. cytoplasmic inheritance. d. genomic imprinting. e. maternal inheritance.
The process of gene expression includes two steps: ____________________ and ____________________
What enzyme is used to synthesize daughter strands of DNA during PCR?
A) replicase B) DNA polymerase C) RNA polymerase D) Taq polymerase
Aldosterone
A. secretion is stimulated by angiotensin II. B. stimulates the absorption of sodium and chloride ions from the lumen of the nephron. C. decreases urine volume. D. increases blood volume. E. produces all of these effects.