Some eukaryotic DNA sequences act as introns in the cells of some tissues and exons in the cells of other tissues. This
is an example of ____, and allows for ____.
a. positive control; feedback inhibition
b. gene amplification; the regulation of the rate of transcription
c. alternative splicing; the formation of different types of closely related proteins
d. DNA methylation; the formation of different types of closely related proteins
e. DNA replication; heterodimer formation
c
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The e4 variation of the APOE gene increases a
person’s chances of developing
a. cystic fibrosis. b. Parkinson’s disease. c. Huntington’s disease. d. Alzheimer’s disease. e. Duchenne’s muscular dystrophy
Darwin's finches, collected from the Galápagos Islands, illustrate which of the following?
A) mutation frequency B) ancestors from different regions C) adaptive radiation D) vestigial anatomical structures E) the accuracy of the fossil record
what organ is located in the back of the abdomen behind the stomach, secretes insulin, and secretes enzymatic juices that aid in digestion
What will be an ideal response?
Whales originated from a terrestrial ancestor
a. true b. false