Describe phylogenomics and its contributions to phylogenetic relationships between protists and other eukaryotes
What will be an ideal response?
ANSWER: Phylogenomics is a type of analysis that utilizes molecular data to compare sequences of
whole genomes, or large segments of genomes. Phylogenomics has clearly illustrated
relationships between protists, plants, animals and fungi, including the most ancient
bifurcation of eukaryotes: bikonts (which contain the plants) and unikonts (which contains
animals and fungi).
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One reason that prokaryotic genes do not contain introns is that
A) the introns are cut out during binary fission. B) due to the short time the bacterium is around as a single organism, a 5' cap and poly (A) tail are added immediately for translation to take place. C) bacterial proteins are very short and not subject to mutation. D) translation sometimes begins before transcription has been completed because prokaryotes do not have a nucleus. E) integrated viral DNA is not recognized for transcription.
In the simplified prairie food chain illustrated by the pictures below, the letter C represents a ____
a. tertiary consumer b. secondary consumers c. first trophic level d. primary consumers e. third trophic level
Fertilization is completed when the sperm nucleus fuses with the ________
Fill in the blank(s) with correct word
Place in order the following steps involved in PCR:
(1) newly synthesized strands act as templates (2) DNA template, nucleotide bases, DNA primers and polymerase added (3) temperature lowered, base pairing between primers and template (4) heat separates strands of target DNA (5) complementary new strand synthesized A. 1 - 2 - 3 - 4 - 5 B. 3 - 5 - 4 - 2 - 1 C. 3 - 2 - 4 - 5 - 1 D. 2 - 4 - 3 - 5 - 1