Unit 4 Exam

A  True

B  False

A  False

B  True

A  True

B  False

A  True

B  False

A  True

B  False

A  True

B  False

A  The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of uracil.

B  The amount of adenine is equal to the amount of cytosine, and the amount of guanine is equal to the amount of thymine.

C  The amount of adenine is equal to the amount of guanine, and the amount of thymine is equal to the amount of cytosine.

D  The amount of adenine is equal to the amount of uracil, and the amount of guanine is equal to the amount of cytosine.

E  The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine.

A  using restriction enzymes to chop bacterial DNA into small pieces

B  using PCR to amplify bacterial DNA

C  cloning bacterial DNA

D  using CRISPR to find and cut a specific sequence of bacterial DNA

E  creating a gene library from bacterial DNA

A  amino acid

B  fatty acid

C  carbohydrate

D  nucleotide

E  nucleic acid

A  A negative result means that she would never develop breast cancer during her lifetime.

B  The results of the screening cannot determine whether an individual has an elevated risk of developing breast cancer, only whether or not the mutation is present.

C  A positive result means that she has a greater risk of developing breast cancer than someone without the BRCA1 and BRCA2 mutation.

D  A positive result means that she would definitely develop breast cancer during her lifetime.

E  A negative result means that she has a greater risk of developing breast cancer than someone who carries the BRCA1 and BRCA2 mutation.

A  a single step in one recipe in the cookbook.

B  a chapter on desserts in the cookbook.

C  one specific recipe in the cookbook.

D  the entire cookbook.

E  the sequence of letters in a recipe in the cookbook.

A  cloning.

B  genetic engineering.

C  CRISPR.

D  a transgenic organism.

E  polymerase chain reaction (PCR).

A  a carbon-containing base

B  a promoter

C  a nitrogen-containing acid

D  another sugar-phosphate strand

E  a nitrogen-containing base

A  All of their sons and none of their daughters exhibit hypophosphatemia.

B  Twenty-five percent of their offspring exhibit hypophosphatemia.

C  Seventy-five percent of their offspring exhibit hypophosphatemia.

D  Fifty percent of their daughters and fifty percent of their sons exhibit hypophosphatemia.

E  All of their daughters and none of their sons exhibit hypophosphatemia.

A  The alleles affect more than one trait.

B  The heterozygote expresses the phenotype of both homozygotes.

C  The phenotype of the heterozygote falls between the phenotypes of the homozygotes.

D  The trait exhibits a continuous distribution.

E  The dominant allele is not always expressed.

A  cannot have children with cystic fibrosis

B  will have children who are all carriers of cystic fibrosis

C  cannot reproduce

D  has cystic fibrosis

E  is a carrier

A  The gene for color vision is completely dominant to the gene for sex determination.

B  The gene for color vision is codominant with the gene for sex determination.

C  The gene for color vision is linked to the X chromosome.

D  The gene for color vision is incompletely dominant to the gene for sex determination.

E  The gene for color vision is linked to the Y chromosome.

A  dd

B  Dd

C  DD

D  DI

A  dominant

B  codominant

C  pleiotropic

D  recessive

E  incompletely dominant

A  centrosomes

B  centromeres

C  nonsexosomes

D  allosomes

E  autosomes

A  n + 1 or n – 1

B  2 n – 1 only

C  n + 1 only

D  2 n + 1 or n – 1

E  2 n + 1 or 2 n – 1

A  centrosome

B  centriole

C  spindle

D  chromatin

E  centromere

A  genetically identical.

B  genetically different.

C  prepared to replicate chromosomes.

D  hexaploid

E  Identical in all ways.

A  XY

B  YOX

C  XYY

D  XO

E  XOY

A  44

B  2

C  22

D  23

E  46

A  two

B  one

C  three

D  five

E  four

A  centrosomes

B  centromeres

C  genes

D  genomes

E  chromatids

A  chiasma

B  centromeres

C  chromosomes

D  nuclei

E  centrosomes