EOC Review

Situations in which one allele for a gene is not completely dominant over another allele for that gene are called

• multiple alleles.

• incomplete dominance.

• polygenic inheritance.

• multiple genes.

Variation in human skin color is an example of

• incomplete dominance.

• codominance

• polygenic traits

• multiple alleles.

The arctic fox is blue-gray in the summer and white in the winter. What most likely influence(s) this change?

• genes and the environment

• dominant alleles

• the environment alone

• codominant alleles

Which of the following is a nucleotide found in DNA?

• adenine + phosphate group + thymine

• cytosine + phosphate group + guanine

• deoxyribose + phosphate group + polymerase

• deoxyribose + phosphate group + cytosine

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases

• TCGAAC.

• AGCTTG.

• GATCCA

• GAUCCA.

Which type of RNA brings the information in the genetic code from the nucleus to other parts of the cell?

• rRNA

• tRNA

• mRNA

• RNA polymerase

Which of the following is true of transcription?

• In eukaryotes, transcription takes place in the cytoplasm and requires many enzymes.

• RNA polymerase recognizes and binds to specific regions of the DNA called introns.

• RNA editing removes the exons from pre-mRNA, leaving only the introns in the final molecule.

• RNA polymerase can make many molecules of RNA from a single DNA sequence.

Colorblindness is more common in males than in females because the allele for colorblindness is

• dominant and located on the X chromosome.

• recessive and located on the Y chromosome.

• recessive and located on the X chromosome.

• dominant and located on the Y chromosome.

Which of the following statements about nucleic acids is true?

• Nucleotides are made of a 5-carbon sugar, a nitrogen base, and a lipid.

• DNA and RNA are examples of nucleic acids that are rarely seen in living things

• Nucleic acids are made of repeating units called lipids

• Nucleic acids store important information about cell division and the manufacturing of proteins

Which of the following statements best describes the relationship between cells, DNA, and proteins?

• Proteins replicate to produce cells, and cells link DNA.

• Cells contain DNA, and DNA controls the production of proteins.

• Cells are linked together by proteins, and cells produce different types of DNA.

• DNA is composed of proteins, and cells carry coded information for how cells function.