Final Exam Review Question Preview (ID: 56216)


Review For Final Exam Genetics. TEACHERS: click here for quick copy question ID numbers.

What is a mutation?
a) any change that is harmful to an organism
b) any change in a gene or chromosome
c) any change that is helpful to an organism
d) any change in the phenotype of a cell

The different forms of a gene are called
a) alleles
b) factors
c) masks
d) traits

What does a Punnett square show?
a) all the possible outcomes of a genetic cross
b) only the dominant alleles in a genetic cross
c) only the recessive alleles in a genetic cross
d) all of Mendel’s discoveries about genetic crosses

If a homozygous black guinea pig (BB) is crossed with a homozygous white guinea pig (bb), what is the probability that an offspring will have black fur?
a) 25 percent
b) 50 percent
c) 75 percent
d) 100 percent

An organism’s physical appearance is its
a) genotype
b) phenotype
c) codominance
d) heterozygous

What does codominance mean in genetics?
a) Both alleles are dominant.
b) Both alleles are recessive.
c) The alleles are neither dominant nor recessive.
d) Each allele is both dominant and recessive.

What happens during meiosis?
a) Each sex cell loses all of its chromosomes.
b) Chromosome pairs separate to form new sex cells.
c) Each sex cell copies itself to form four new chromosomes.
d) Chromosome pairs remain together when new sex cells are formed.

When sex cells combine to produce offspring, each sex cell will contribute
a) one fourth of the normal number of chromosomes.
b) half the normal number of chromosomes.
c) the normal number of chromosomes.
d) twice the normal number of chromosomes.

A plant that has round and yellow seeds (RrYy) is crossed with a plant that has round and yellow seeds (RrYy). What is the ratio of the offspring that will have round and yellow seeds? Key: R = round r = wrinkled Y = yellow y=green
a) 1:16
b) 3:16
c) 8:16
d) 9:16

Factors that control traits are called
a) genes
b) purebreds
c) recessives
d) parents

Scientists call an organism that has two different alleles for a trait a
a) hybrid
b) trait
c) purebred
d) factor

What does the notation TT mean to geneticists?
a) two dominant alleles
b) two recessive alleles
c) at least one dominant allele
d) one dominant and one recessive allelle

In roses, red flowers and long stems are dominant. A rose that is homozygous for both red flowers and long stems is crossed with one that is heterozygous for red flowers and homozygous for short stems. How many offspring will have red, long stems?
a) 25 percent
b) 50 percent
c) 75 percent
d) 100 percent

Parents with the genotypes AO and AB have a child. What are all the possible blood types of the child?
a) A, B
b) O, AB
c) A, AB, B
d) O, AB, A

two birds are crossed; one that is homozygous for red feathers and one that is homozygous for blue feathers. Purple offspring result due to incomplete dominance. Then, two of the purple offspring are crossed. how many of the offspring will be purple?
a) 1 in 4
b) 2 in 4
c) 3 in 4
d) 4 in 4

Which blood type could be given as a transfusion for patient with AB blood when the RH factor is unknown?
a) O+
b) A+
c) AB+
d) AB–

Mendel’s pea plants had either purple or white flowers. This means that the plants
a) can self-pollinate.
b) have two recessive traits.
c) have two alleles for the gene.
d) have two copies of a gene from one parent.

If Mendel had crossed a true breeding dominant plant with a true breeding recessive plant, in which of the three generations is the recessive trait visible?
a) F1 generation only
b) P generation only
c) F1 generation and F2 generation
d) P generation and F2 generation

Some flowering plants appear to have offspring that have traits that are intermediate between those of the parents. Which type of dominance is exhibited by the offspring?
a) complete dominance
b) blended dominance
c) codominance
d) incomplete dominance

Which scenario breaks the law of segregation?
a) a gamete contains the father’s allele
b) the gametes produced each have 1 allele after meiosis II
c) a gamete produced has 2 of the same alleles after meiosis II
d) the gamete fertilized has the dominant trait

Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 56216 in the upper right hand corner or click here.

TEACHERS / EDUCATORS
Log In | Sign Up / Register

Help / Support / FAQ




Gaming Links