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WorksheetsGenetics/ Reproduction
Total questions: 40
Worksheet time: 27mins
Name
Class
Date
1.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
2.
The man who studied genetics and came up with genetics is
a)
Watson
b)
Crick
c)
Mendel
d)
Darwin
3.
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
4.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
5.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
6.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
7.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
8.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
9.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
10.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
11.
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
12.
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%
13.
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
14.
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
15.
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
16.
Which answer best describes codominant alleles?
a)
Both are equally dominant
b)
Both are equally recessive
c)
Neither are dominant or recessive
17.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
18.
This is an example of what?
a)
Complete dominance
b)
Incomplete dominance
c)
Codominance
d)
None of the above
19.
A corn plant heterozygous for tall sprouts mates with a corn plant with short sprouts. If tall sprouts are dominant, how many different phenotypes are possible in the offspring?
a)
1
b)
2
c)
3
d)
4
20.
Which of the following cell types is formed by meiosis?
a)
muscle cells
b)
skin cells
c)
sperm cells
d)
blood cells
21.
What is one advantage of sexual reproduction?
a)
offspring are identical to parents
b)
offspring are resistant to viruses
c)
offspring are born live, rather thna from eggs
d)
offspring inherit a wider variety of genetic information
22.
Term for homozygous organisms that display two dominant phenotypes at the same time
a)
codominance
b)
incomplete dominance
c)
multiple alleles
d)
linked genes
23.
An organism's appearance is known as its
a)
heredity
b)
phenotype
c)
genotype
d)
pedigree
24.
Sex cells are produced through the process of
a)
mitosis
b)
cytokinesis
c)
binary fission
d)
meiosis
25.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
26.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
27.
Which type(s) of reproduction involves only ONE parent?
a)
asexual
b)
sexual
c)
both
28.
Which type(s) of reproduction involves TWO parents?
a)
asexual
b)
sexual
c)
both
29.
Which type(s) of reproduction involves genetically unique offspring - a variety?
a)
asexual
b)
sexual
c)
both
30.
Which type(s) of reproduction involves offspring identical to the parent?
a)
asexual
b)
sexual
c)
both
31.
Which type(s) of reproduction involves NO genetic diversity?
a)
asexual
b)
sexual
c)
both
32.
Inherited traits are things that you ________________.
a)
choose
b)
learn and practice
c)
are born with
d)
eat
33.
An acquired trait is something that you _________.
a)
cannot change
b)
eat
c)
are born with
d)
learn, or practice.
34.
Grace got a scar from cutting her finger with a knife when she was eight. Her scar is an _____________.
a)
inherited trait
b)
acquired trait
c)
sexual reproduction
d)
asexual reproduction
35.
Harry is a naturally gifted sportsman just like his dad. His ability to play sports like basketball is _____________.
a)
inherited
b)
acquired
36.
Jasper and his dad both have very thick hair. Is Jasper's thick hair acquired or inherited?
a)
acquired
b)
inherited
37.
What is a disadvantage of sexual reproduction?
a)
Parent appears healthy but offspring can still be affected by a disease.
b)
it produces more offspring
c)
It generate genetically diverse offspring
d)
It generates identical offspring
38.
Examine the pedigree. The allele for the presence of a widow’s peak is dominant. Therefore, we can tell from the chart that in the couple labeled 2:
a)
the male is heterozygous and the female is homozygous.
b)
the male is homozygous and the female is heterozygous.
c)
the male is homozygous and the female is homozygous.
d)
the male is heterozygous and the female is heterozygous.
39.
What is the mode of inheritance shown here?
a)
Recessive
b)
Dominant
40.
Is the inherited trait dominant or recessive in this pedigree?
a)
Dominant
b)
Recessive
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