In the construction of a phylogenetic tree, a ______ considers the overall similarities among a group of species without trying to understand their evolutionary history, whereas a ______ considers the possible pathways of evolution to find the best possible tree.
A. cladistic approach; phenetic approach
B. phenetic approach; cladistic approach
C. shared derived character; ancestral character
D. ancestral character; shared derived character
B
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A decreased risk of epigenetic imprinting disorders, such as Beckwith-Wiedemann syndrome, is observed in children conceived following ART
a. True b. False Indicate whether the statement is true or false
If a cell's splicesomes were mutated so they no longer functioned normally, what consequences would result?
A. Introns would remain in the mature mRNA. B. Exons would be missing in the mature mRNA. C. Transcription would cease. D. A functional protein would still be produced. E. RNA processing would remain intact.
In mRNA codons: UUU = phenylalanine, GUU = valine, UAU = tyrosine, UGU = cystine, GGU = glycine. If the third amino acid in a protein were valine, the codon sequence for that amino acid would be
A. UAU. B. GGU. C. UUU. D. GUU.
Genes that have DNA sequences similar to functional genes but that do not appear to produce any functional product are ________.
Fill in the blank(s) with the appropriate word(s).