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WorksheetsThose genes, though!
Total questions: 50
Worksheet time: 51mins
Name
Class
Date
1.
The dominant trait is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
2.
A heterozygous yellow pea plant's genotype would be:
a)
YY
b)
yy
c)
Yy
d)
Yg
3.
The genotypic ratio here is
a)
25% blue eye 75 % brown eye
b)
BB = 25% Bb = 50% bb = 25%
c)
BB= 50 % bb = 50%
d)
All brown eye
4.
A Punnet Square will
a)
tell you exactly what your offspring will look like
b)
increase the chance you pass on recessive traits
c)
predict genotypes and phenotypes in offspring
d)
have no purpose but for Taylor to give us extra assignments
5.
To be a yellow seed genotype must be
a)
aa
b)
Aa
c)
AA
d)
AA or Aa
6.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
7.
Snapdragon flowers come in red, pink and white. What type of inheritance is this?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Codominance
d)
Polygenic Inheritance
8.
Red/green color blindness is a recessive trait. A woman who is a carrier XCXc for this allele marries a normal-vision male XCY. What is the probability that they will have a child who is color blind?
a)
1/4
b)
1/2
c)
3/4
d)
1
9.
Polygenic means that _____________________ control a characteristic. An example of a polygenic trait is hair, color, height, and intelligence.
a)
many genes
b)
single genes
c)
3 genes
d)
no genes
10.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
11.
What you see, or the physical appearance in an organism.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
12.
In mussels, the allele for brown coloring (B) is dominant, and the allele for blue coloring(b) is recessive. For which parental genotypes are 100% of the offspring expected to be blue?
a)
BbxBb
b)
bbxbb
c)
BBxbb
d)
BBxBB
13.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
14.
This type of inheritance pattern is a MIXTURE of both traits in heterozygous individuals. (Ex. Rr)
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
15.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
16.
A human usually has _____ total chromosomes.
a)
6
b)
22
c)
4
d)
46
17.
This principle states that alleles separate during gamete formation:
a)
law of dominance
b)
law of recessive
c)
Law of segregation
d)
Law of indep assortm't
18.
Who is the father of genetics?
a)
Charles Darwin
b)
Gregor Mendel
c)
Dimitri Mendeleev
d)
Hans Krebs
19.
What characteristic would a child NOT inherit from parents?
a)
freckles
b)
eye color
c)
hair style
d)
dimples
20.
A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?
a)
25%
b)
50%
c)
75%
d)
100%
21.
A cross involving a single gene is a ___________ cross.
a)
dihybrid
b)
monohybrid
c)
mutation
d)
nucleotide
22.
If an individual shows a recessive phenotype then the only genotype they can be is....
a)
homozygous dominant
b)
heterozygous
c)
homozygous recessive
d)
you can't tell
23.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
24.
Male-Pattern baldness is a recessive, X chromosome sex-linked disorder. Cross the parents XBXb and XbY to determine which percentage of their offspring will be inherit this baldness.
a)
25%
b)
0%
c)
75%
d)
50%
25.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender
d)
all of the above
26.
What is the cause of some traits "skipping" a generation?
a)
dominant traits
b)
recessive traits
c)
mutations
d)
natural selection
27.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
28.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
29.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
30.
The inheritance pattern that allows only one trait to show is called _______________ _______________.
a)
complete dominance
b)
co-dominance
c)
incomplete dominance
d)
dominant trait
31.
A child born with blood type O could have parents with all of the following blood types except...?
a)
iAiO and iBiO
b)
iBiO and iOiO
c)
iAiO and iAiO
d)
iAiB and iOiO
32.
What fraction of offspring from the cross AaBB x Aabb will be heterozygous for both traits (ex. AaBb) ?
(This is a dihybrid cross, so you will need 2 punnett squares!)
(This is a dihybrid cross, so you will need 2 punnett squares!)
a)
1/16
b)
1/4
c)
1/2
d)
3/16
33.
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
34.
A breed of chicken shows codominance for feather color. One allele (B)codes for black feathers, another (W) codes for white feathers. The feathers of heterozygous (BW) chickens of this breed will be:
a)
all black
b)
all white
c)
all gray
d)
speckled black and white
35.
Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What percentage of the offspring of the cross BbTt x BBtt will have black fur and long tails?
a)
0%
b)
25%
c)
50%
d)
100%
36.
What disorder results in uncontrollable bleeding?
a)
hemophilia
b)
Tay-sacs
c)
progeria
d)
cystic fibrous
37.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
38.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
39.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
40.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
41.
Which law states that the inheritance of one trait does not influence the inheritance of another?
a)
law of genetic linkage
b)
law of independent assortment
c)
law of segregation
d)
law of inheritance
42.
Recessive alleles may not be expressed because they are
a)
masked by a dominant allele
b)
the least common allele in a population.
c)
the most common allele in a population.
d)
less likely to have crossing over.
43.
A boy who is colorblind inherited the disorder from his
a)
Mother
b)
Father
c)
Either Parent
d)
None of the above
44.
A specific location on a chromosome that controls a certain trait or function.
a)
gene
b)
haploid
c)
sister chromatid
d)
centromere
45.
How many chromosomes are shown in a normal human karyotype?
a)
2
b)
12
c)
25
d)
46
46.
Colorblindness is more common in males than in females because
a)
Fathers pass the allele for colorblindness to their sons only
b)
The allele for colorblindness is located on the Y chromosome.
c)
The allele for colorblindness is recessive and located on the X chromosome.
d)
Males who are colorblind have two copies of the allele for colorblindness.
47.
Which of the following combinations of sex chromosomes represents a female?
a)
XX
b)
XY
48.
Gene located on the X or Y chromosome
a)
Homozygous dominant
b)
nondisjunction
c)
Sex-linked gene
d)
Autosomal Disorder
49.
What is another way of saying "hybrid"?
a)
heterozygous
b)
homozygous dominant
c)
homozygous recessive
d)
none of these choices
50.
What is another way of saying "purebred"?
a)
homozygous
b)
dominant
c)
recessive
d)
heterozygous
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