Which of the phylogenetic trees above best demonstrates cladogenesis?
A. Tree 1
B. Tree 2
C. Tree 3
D. Both Tree 2 and Tree 3
E. Both Tree 1 and Tree 2
D. Both Tree 2 and Tree 3
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Which term refers to the DNA sequence onto which proteins and enzymes bind to initiate transcription?
a. Promoter b. Intron c. Polymerase d. Exon
Heritable changes in gene expression not due
to changes in DNA sequences is termed
a. epigenetics. b. methylation. c. translational mutation. d. differentiation. e. frameshift inheritance
Which of the following BEST describes the essential difference between plant and animal nutrition?
A) Plants use inorganic substances and energy from the sun to produce their own food. B) Plants use organic substances to produce their own food. C) Plants absorb food through their roots. D) Plant and animal nutrition are essentially the same.
Immune sera is produced in horses for all the following exceptÂ
A. snake bites. B. diphtheria. C. botulism. D. chickenpox. E. spider bites.