A mutation that changes a triplet mRNA sequence from UCA, specifying serine to UGA, a stop codon, would be called a _________ mutation.

DNA polymerase 5‘ to 3‘ exonuclease activity is possessed by:

In bacteria, formation of the peptide bond is catalyzed by _______________.

Typically, mRNA turnover in eukaryotes predominantly occurs through the

If a woman with blood type A has a child with a man of blood type B, which of the following blood types would not be possible considering all of the genotypes that determine these blood types?

All of the following represent steps in eukaryotic mRNA processing/modifications except:

-10 and -35 are binding sites for general transcription factors that form the basal transcription apparatus with RNA polymerase II.

Eukaryotic mRNAs may be altered after transcription to encode different amino acids than specified in the gene in a process known as:

The A form is the secondary structure of the DNA double helix most likely found under physiological conditions.

Mendel's observation that unit factors in inheritance, which we now call alleles, separate during formation of the gametes contributes to his second principle of segregation.

Because of dosage compensation, cats with a coat color that is calico must be hemizygotes.

Methylation of DNA can assist in all but which of the following processes in bacteria or eukaryotes?

Bacteria initiate transcription at the promoter through opening of the transcription bubble by the initiator proteins.

Termination of replication in eukaryotes is assisted by the protein Tus that binds to termination sequences.

A shared feature in the chemistry of DNA and RNA is:

In bacteria, transcription is switched off by binding of repressor proteins to an element in the transcription unit called the operator.

The Shine-Dalgarno sequence complementary base-pairs with the:

Term for an evolutionary process resulting in a change in allele frequency due to environmental conditions favoring more fit genotypes.

An operon regulated by a repressor protein that is normally off, but is switched on in the presence of a small molecule is under:

All of the following represent base-pairing that can be found in the Wobble position except:

A cross between a true-breeding plant with yellow flowers and a true-breeding plant with red flowers produces offspring with petals producing both red and yellow pigments, making the flowers appear orange. When the orange flower plants are self-pollinated, their progeny show the following ratio: 1 red flowers: 2 orange flowers: 1 yellow flowers. This phenotype ratio shows:

The histone ________ is found in chromatin that is not actively transcribed and condensed into the 30 nm fiber.

In eukaryotes, the genes for rRNAs are transcribed by:

An end-product of a biochemical pathway that allosterically binds a repressor to cause a conformation change to the protein-binding state functions as:

The level protein structure that is defined as the three-dimensional folding within a single polypeptide:

A transcription unit can often include more than one protein-coding gene in bacteria, but not in eukaryotes.

The mutation seen in the DNA sequence below would be best described as: Wildtype: 5' - ATGCTAGTACGTAT -3' Mutant: 5' - ATGGTAGTACGTAT -3'

Inbreeding is an example of negative assortative mating because it can have negative consequences with the appearance of deleterious homozygous recessive genotypes.

Population genetics process in which there is a change in genotype frequencies include all the processes below except:

Coordinated regulation of genes that encode proteins or enzymes that function in the same cellular process is achieved in bacteria and eukaryotes by organization of these genes as operons producing polycistronic mRNAs.

In humans, a person with the sex chromosome karyotype of XX would have _______