GENETICS SOL REVIEW –2015
Name ____________________________
A
B
Letter Answer
1.
P GENERATION
C
D
2.
LAW OF SEGREGATION
3.
HETEROZYGOUS
4.
E
F2 GENERATION
F
F1 GENERATION
G
5.
6.
GENETICS
7.
8.
GENES
ALLELES
9.
GREGOR MENDEL
10.
HYBRID
11.
12.
DIHYBRID CROSS
I
J
K
L
M
MONOHYBRID CROSS
13.
PURE BREEDING
14.
DOMINANT
15.
HOMOZYGOUS
16.
H
CODOMINANCE
N
O
P
Father of Genetics; Austrian monk
who studied garden pea plants
A segment of DNA that codes for a
specific trait; DNA instructions to
make one protein
Branch of biology that studies
heredity or patterns of inheritance
Alternate or different forms of a
trait; designated as a capital or
lower case letter
Organisms that produce offspring
identical to themselves;
homozygous for a trait
Produced by crossing parents with
different alleles for a trait;
heterozygous
The parent plants in Mendel’s
experiments; pure breeding for a
trait when self-pollinated
Offspring of the parents in Mendel’s
experiments who are cross
pollinated; all hybrids
Hybrid offspring from F1
generation; when self-pollinated
recessive traits reappear
Both alleles for a trait are the same
Alleles for a trait are different; also
called hybrid
The form of a gene that physically
appears even if only one copy is
present
A cross between parents with
different alleles (heterozygous) for
a single trait
A cross between parents with
different alleles (heterozygous) for
two traits
The separation of alleles for a trait
during gamete formation
Both alleles contribute to the
phenotype of the organism
17. A geneticist studying fruit flies
hypothesizes that short wings are a
recessive trait coded for by a single gene.
Which observation is most likely to have
led her to form this hypothesis?
F Flies have wing lengths ranging from very
long to very short.
G Flies with long wings are less likely to
survive.
H Flies with long wings can produce offspring
with short wings.
J Flies with short wings prefer to mate with
flies with long wings.
21. Timothy has attached earlobes like his
maternal grandfather. His mother and
father both have free earlobes, which are
dominant. Which statement best explains how
Timothy inherited attached earlobes?
F He received a recessive allele from each parent.
G He received a dominant allele from each parent.
H He received a recessive allele from his mother
and a dominant allele from his father.
J He received a dominant allele from his mother
and a recessive allele from his father.
18. What ratio of the offspring from the cross
shown will be homozygous recessive for the
trait of tallness?
A 0 in 4
B 1 in 4
C 2 in 4
D 4 in 4
22. In snapdragons, the combined expression of
both alleles for flower color produces a new
phenotype that is pink. This illustrates
incomplete dominance. The Punnett square
above shows that both the white and red
snapdragons are homozygous. Which of the
following would be the correct product from a
cross between two heterozygous pink
snapdragons?
F 2 red, 1 pink, 1 white
G 1 red, 2 pink, 1 white _
H 1 red, 1 pink, 2 white
J 2 red, 2 white
19. Gametes must be haploid because —
A gametes are small and can hold only the haploid
number of chromosomes
B the gametes’ chromosomes will be replicated
prior to cell division
C two gametes will unite during fertilization to
create a diploid cell
D fertilization results with a haploid zygote
23. The chances of developing cancer, diabetes,
or sickle-cell anemia are higher if a family
member also has the disorder because they are
—
F highly infectious
G passed through blood contact
H genetically based _
J related to diet
20. In a plant that has red flowers, red flower
color, R, is completely dominant to white flower
color, r. If the plant is heterozygous for flower
color, which alleles will be carried by the
gametes it produces?
F R and r
G R only
H r only
J Rr only
24. The processes of meiosis and
fertilization help ensure the survival of
the species by providing each
generation with the same number of —
A body cells
B chromosomes _
C offspring
D gametes