Download Genetics Test Final

Genetics Test
Please do not write on the test!
Directions: Choose the best answer for each question and mark the answer on your answer sheet.
6. The _________ trait is the trait that 6.
1. The process by which traits pass
from parent to offspring is called
a. spontaneous generation
b. cell movement
c. heredity
d. specialization
2. An organism that has two different
alleles for a trait is called
a. a hybrid
b. homozygous
c. purebred
d. a factor
3. An inherited trait can be determined
by one or many __________.
a. Golgi bodies
b. ribosomes
c. genes
d. nuclei
4. The two forms of the same gene are
called ____________.
a. alleles
b. recessive
c. chromosomes
d. dominant
5. The __________ trait is the trait that
appears when two different alleles for
the same gene are present.
a. recessive
b. dominant
c. chromosomes
d. alleles
6. The __________ trait seems to
disappear when two different alleles are
present.
a. recessive
b. dominant
c. chromosomes
d. alleles
7. The dominant gene determines the
organism’s appearance, which is called
_____________.
a. probability
b. genotype
c. phenotype
d. mutations
8. Genes are located in ____________.
a. cytoplasm
b. vacuoles
c. lysosomes
d. chromosomes
9. Organisms that reproduce sexually
receive what percent of their genes from
one parent?
a. 100%
b. 50%
c. 25%
d. 0%
10. A cat has kittens and each kitten is a
different color. Which reason BEST
explains this?
a. The gene that controls fur color in
cats mutate easily.
b. More than one gene and alleles
control fur color in cats.
c. Fur color in cats is not determined
by genes.
d. The gene that controls fur color in
cats is recessive.
11. Gregor Mendel’s work was the foundation for understanding why
a. the results of one genetic cross do not affect the outcome of a second cross
b. sex cells have half the number of chromosomes as body cells
c. protein synthesis occurs in cytoplasm
d. offspring have similar traits to those of their parents
Use the diagram below to answer questions 12-15. Long Hair is the dominant trait in
cats.
L
l
l
l
12. What are the genotypes of the offspring?
a. Short hair, long hair
b. Ll, ll
c. homozygous
d. heterozygous
13. What are the phenotypes of the offspring?
a. Short hair, long hair
b. Hh, hh
c. homozygous
d. heterozygous
14. What percentage of the offspring will have long hair?
a. 25%
b. 50%
c. 75%
d. 100%
15. Suppose the heterozygous long-haired cat was replaced with a homozygous longhaired cat. What would be the percentage of offspring with long hair?
a. 25%
b. 50%
c. 75%
d. 100%
For the next two questions, use your scantrons as scratch paper. Write outside of the
box!
16. What would be the percent chance of the offspring being tall if a heterozygous tall
pea plant was crossed with a homozygous short pea plant?
a. 25%
b. 50%
c. 75%
d. 100%
17. What would be the percent chance of the offspring having a BB genotype if a
heterozygous dominant brown horse was crossed with another heterozygous brown
horse?
a. 25%
b. 50%
c. 75%
d. 100%
18. A black cat is crossed with a white cat. All of their kittens are grey. What type of
dominance does this show?
a. Complete dominance
b. Codominance
c. Incomplete dominance
d. Incomplete recessive
19. Name the 4 Nitrogen base pairs.
a. CTGH
b. ABCD
c. CGAT
d. LOL
20. What characteristic is NOT about asexual reproduction methods?
a. Offspring produced through 2 parents.
b. Single parent produces offspring.
c. Genes of only one parent are inherited.
d. Is the primary form of reproduction for single-celled organisms
Short response question
Using complete sentences, please tell me one strong PRO-GMO and one
strong ANTI-GMO argument point.
(use facts/stats/data if you remember them)
PRO-GMO:
ANTI-GMO: