What does it mean to say that an allele is "fixed" in the population?
A. It has been repaired by typical
mechanisms in the cell.
B. It is an indication of no genetic variation at
that locus in the population.
C. It is an indication of low genetic variation at
that locus in the population.
D. It is an indication of high genetic variation
at that locus in the population.
E. It is an indication that locus cannot
undergo mutation.
B
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What is true according to the adaptor hypothesis?
A. The anticodon and amino acid have no relationship. B. A given tRNA can carry any of the twenty amino acids. C. The position of an amino acid within a polypeptide is determined by the binding of mRNA with a tRNA carrying a specific amino acid D. An amino acid recognizes the codon in mRNA.
Which of the following groups of vertebrae are located closest to the head?
a. sacral b. thoracic c. cervical d. coccygeal e. cranial
A polymer of glycan and peptides found in bacterial cell walls.
A) peptidoglycan B) endosymbiosis C) biomass D) panspermia
________ from foraminifera make up the White Cliffs of Dover and the stones used to build the great pyramids.
Fill in the blank(s) with the appropriate word(s).