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WorksheetsGenetics
Total questions: 25
Worksheet time: 16mins
Name
Class
Date
1.
phenotypes that is a blend of the heterozygous gene pair
a)
incomplete dominance
b)
multiple alleles
c)
regulatory genes
2.
the genetic code for the gene
a)
phenotype
b)
genotype
c)
homozygous
3.
trait shows only if both parents pass it on
a)
recessive
b)
dominant
c)
codominan
4.
when you have two different genes
a)
heterozygous
b)
dominant
c)
homozygous
5.
when you have two of the same genes
a)
heterozygous
b)
recessive
c)
homozygous
6.
phenotypes that shows both traits
a)
semi-dominant
b)
heterozygous
c)
codominance
7.
the physical look of a trait
a)
phenotype
b)
genotype
c)
recessive
8.
shows even if only one parent passes on the gene
a)
recessive
b)
regulatory gene
c)
dominant
9.
the following letters are an example of _______ dd
a)
recessive
b)
homozygous recessive
c)
homozygous dominant
d)
dominant
10.
Dd letters are an example of....
a)
heterozygous genes
b)
homozygous genes
c)
dominant genes
d)
recessive genes
11.
DD is an example of
a)
homozygous recessive
b)
dominant
c)
Homozygous dominant
d)
recessive
12.
When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered....
a)
Incomplete Dominance
b)
Codominance
13.
When one allele is not dominant over the other, resulting in both traits expressed in a heterozygous individual.....
a)
Incomplete Dominance
b)
Codominance
14.
In cattle red coats are represented as RR, and white coats are represented as WW.
What is the genotype for Roan color?
a)
RR
b)
RW
c)
WW
15.
In mice coat color is incompletely dominant. Black and white are homozygous. Brown mice are heterozygous.
What is the genotype for a brown mouse?
a)
BB
b)
Bb
c)
bb
16.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
17.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
18.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
c)
Independent assortment
d)
Recessive inheritance
19.
How many alleles does an individual have for each trait?
a)
1
b)
2
c)
3
d)
4
20.
A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:
a)
all black
b)
all white
c)
all gray
d)
speckled black and white
21.
The different forms of a gene are called
a)
traits
b)
pollinators
c)
alleles
d)
hybrids
22.
What gamete possibilities could come from this parent's genotype?
a)
AB, AB, aB, aB
b)
Ab, AB, Ab, ab
c)
Ab, Ab, Ab, Ab
d)
AB, aB, ab, aB
23.
Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds?
a)
0%
b)
25%
c)
50%
d)
100%
24.
A dihybrid cross shows the possible outcomes of _______
a)
two alleles
b)
two parents
c)
two traits/characters
d)
a self pollination
25.
parent 1: GgBB
parent 2: ggBb
Find the gametes for parent 1.
parent 2: ggBb
Find the gametes for parent 1.
a)
GB, GB, gB, gB
b)
gB, gb, gB, gb
c)
Gg, BB, GB, GB
d)
gg, Bb, gB, gb
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