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WorksheetsJH - Genetics
Total questions: 60
Worksheet time: 2hrs 42mins
Name
Class
Date
1.
Penguins live in the Antarctic, which of the following is an adaptation that allows the penguin to survive the very cold region?
a)
Swimming under water
b)
Black and White body color
c)
Extra fatty layer for warmth
d)
Little wings
2.
Due to climatic change the turtles who lay their eggs close to shore will not hatch. Which of the following are true.
a)
Near shore turtles will survive more than far shore turtles
b)
Far shore turtles will survive more than near shore turtles
c)
All turtles will survive about the same
d)
None of the above is true
3.
Fire ants which are not native to Texas will aggressively attack bird's eggs that have a nest on the ground. Which is most likely to happen due to the fire ants arrival to Texas?
a)
Tree nesting bird population will decrease
b)
Tree nesting bird population will increase
c)
Ground nesting bird population will increase
d)
Ground nesting bird population will decrease
4.
If global climate changed to no snow where the snowshoe hare lives, what will probably happen to the snowshoe hare's fur color in the winter (after several generations)?
a)
The fur will stay white
b)
The fur will be brown all year
c)
The snowshoe hare will not be affected at all
d)
The fur will be light brown.
5.
Inherited traits are controlled by
a)
nucleus
b)
chromosomes
c)
genes
d)
cells
6.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
7.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous genes
d)
mutated DNA
8.
Aa is
a)
homozygous (purebred)
b)
heterozygous (hybrid)
9.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
10.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
11.
T = tall an t = short
What is the phenotype for Tt?
What is the phenotype for Tt?
a)
short
b)
tall
c)
medium sized
d)
neither tall or short
12.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
13.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
14.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
15.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
16.
In a Punnett square each box represents a(n)....
a)
offspring
b)
parent
c)
gene
d)
trait
17.
Is this punnet square true or false?
a)
False, because there should be 3 dominate alleles.
b)
True.
c)
False, because There should be 3 recessive alleles.
d)
I don't know....
18.
The passing of physical characteristics from parent to offspring is __________.
a)
genetics
b)
heredity
c)
genes
d)
traits
19.
When two identical alleles for a trait are in an organism, the organism is said to be ____________?
a)
Heterozygous
b)
Homozygous
c)
allele
d)
resseive
20.
characteristic that is inherited; can be either dominant or recessive
a)
genes
b)
allele
c)
chromosome
d)
trait
21.
outward appearance of an organism, regardless of its genes.
a)
phenotype
b)
genotype
c)
haploid
d)
deploid
22.
The genetic characteristics of recessive genes
a)
tend to mask the characteristics of dominant genes.
b)
are always expressed in the phenotype.
c)
are usually codominant.
d)
tend to be masked by the characteristics of dominant genes.
23.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
24.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
25.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
26.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
27.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
28.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
29.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
30.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
31.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
32.
In this punnett square, which is the dominant trait?
The B stands for bud.
The B stands for bud.
a)
purple flower bud
b)
white flower bud
c)
dominant
d)
recessive
33.
W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
a)
none
b)
3/4
c)
1/2
d)
all
34.
The study of heredity and the variation of inherited characteristics
a)
gene
b)
genetics
c)
meiosis
d)
hybrid
35.
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%
36.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
37.
this image is an example of
a)
codominance
b)
dominance
c)
incomplete dominance
38.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
39.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
40.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
41.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
42.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
43.
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%
44.
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
45.
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
46.
Incomplete dominance means that the traits are
a)
expressed equally
b)
dominant
c)
recessive
d)
blended
47.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
48.
Which of the following genotypes is a purebred?
a)
Bb
b)
Gg
c)
bb
d)
Dd
49.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
50.
Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa
AA x aa
a)
AA
b)
Aa
c)
aa
d)
brown fur
51.
Which is the correct phenotype for this organism?
a)
BB
b)
blue
c)
green
d)
bb
52.
Dominant alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
53.
Recessive alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
54.
Tt is-
a)
homozygous dominant
b)
homozygous recessive
c)
heterozygous
d)
none of these
55.
What is heredity?
a)
A kind of genetic disorder
b)
The way DNA divides
c)
A trait you inherit from your parents
d)
The passing down of traits from parents to children
56.
What is the relationship between DNA and chromosomes?
a)
Chromosomes are made of DNA
b)
DNA is made of chromosomes
c)
DNA and chromosomes are the same thing.
d)
All of the above are correct
57.
Put in order smallest to largest:
a)
Chromosome - DNA - Gene
b)
Gene - DNA - Chromosome
c)
DNA - Gene Chromosome
d)
Chromosome - Gene - DNA
58.
Inherited traits are controlled by
a)
genetic information in the genes
b)
the environment a baby is born into
c)
the nucleus and mitochondria
d)
none of the above
59.
Which is true about DNA?
a)
Only animals have DNA in their cells
b)
DNA research is simple and quick
c)
DNA contains many genes
d)
None of the above are true.
60.
Which trait is completely determined by your DNA?
a)
Your personality
b)
Your intelligence
c)
Your natural hair color
d)
Your weight
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