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Genetics UA Review

Total questions: 33

Worksheet time: 20mins

Name
Class
Date
1.
What is another way of saying "purebred"?
a)
homozygous
b)
dominant
c)
recessive
d)
heterozygous
2.
An observable trait, such as eye color, can be described as...
a)
an acquired trait
b)
a phenotype
c)
a genotype
d)
a heterozygous gen
3.
If you cross two parents, both with genotype Bb, what percentage of children will have brown eyes?
a)
25%
b)
50%
c)
75%
d)
100%
4.
The two different forms of a gene are called _________.
a)
zygotes
b)
traits
c)
phenotypes
d)
alleles
5.
How many chromosomes are found in human body cells?
a)
0
b)
23
c)
46
d)
50
6.
How many chromosomes are found in human sex cells?
a)
0
b)
23
c)
46
d)
50
7.
What is the type of dominance when the two traits aren't dominant over each other, but whose heterozygous outcome is blended?
a)
co-dominance
b)
simple dominance
c)
incomplete dominance
d)
non-dominance
8.
What are traits that aren't dominant over each other but whose heterozygous outcome is a combination of the two equally but separately?
a)
pure dominance
b)
incomplete dominance
c)
co-dominance
d)
simple dominance
9.
If there is a cross of a red and white chicken, and the trait is co-dominant, what will be the result?
a)
a blended color
b)
a speckled chicken
10.
When a plant fertilizes another plant:
a)
self-pollination
b)
cross-pollination
c)
true-breeding
d)
allele-breeding
11.
What carries the genes that determine sex (gender)?
a)
Sex chromosomes
b)
homologous chromosomes
c)
phenotypes
d)
karyotypes
12.
A plant that fertilizes itself is called: 
a)
self-pollinating
b)
true-breeding
c)
cross-pollinating
d)
allele-pollinating
13.
Which sex chromosome do males have?
a)
XX
b)
XY
c)
AB
d)
BA
14.

An organism is a hybrid genotype (Tt) but is appears tall instead of short.

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

15.

Which of Mendel's laws states that alleles are separated during meiosis?

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

16.

Which of Mendel's laws states that alleles are distributed to gametes independent of one another?

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

17.
Genetic recombination is the production of offspring - - - 
a)
with new combinations of genes
b)
with similar genes as their parent
c)
that are completely different from the parents
d)
that are super cute and irresistible
18.
Why is the gene for a disease or disorder more likely to be found on the X chromosome than Y?
a)
The X chromosome has many more genes
b)
The Y chromosome has many more genes
19.
Males are more likely to suffer from a sex-linked disease or disorder because
a)
males are the weaker sex
b)
males have less DNA
c)
males have 1 X chromosome, so the disorder is more likely to be expressed
20.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
21.
When we say that a woman is a carrier for a genetic disease or disorder it means that
a)
she has 1 gene, but not the disorder
b)
she has 2 genes for the disorder
c)
she can pass the gene only to male children
d)
she can pass the gene only to female children
22.
If a father is AA and a mother is AB, what is the probability for a child with AB blood? 
a)
0%
b)
25%
c)
50%
d)
75%
23.
Using the dihybrid cross and key provided, what is the probability of the offspring being tall and white?
a)
9
b)
2
c)
3
d)
6
24.

Examples include skin color and height (the individual's phenotype exists somewhere along a spectrum)

a)

polygenic inheritance

b)

multiple alleles

c)

linked genes

d)

incomplete dominance

25.

A four box Punnett square explains which of Mendel's laws?

a)

Law of Segregation

b)

Law of Dominance

c)

Murphy's Law

d)

Law of Independent Assortment

26.

A 16 box Punnett Square explains which of Mendel's Laws?

a)

Law of Segregation

b)

Murphy's Law

c)

Law of Dominance

d)

Law of Independent Assortment

27.
What is the mode of inheritance shown here?
a)
Autosomal Dominant
b)
Autosomal Recessive
c)
Sex Linked Recessive
28.
What is the mode of inheritance shown here?
a)
Autosomal Recessive
b)
Autosomal Dominant
c)
Sex Linked
29.
What is the mode of inheritance shown here?
a)
Autosomal Recessive
b)
Autosomal Dominant
c)
Sex Linked
30.
Determine the sex of the individual whose karyotype is displayed in the image.
a)
female
b)
male
31.

Chromosome pairs 1-22 are referred to as

a)

sex chromosomes

b)

sister chromatids

c)

a karyotype

d)

autosomes

32.
What are the possible phenotypes in this punnett square?
a)
Bb, bb, BB
b)
purple, white
c)
Bb, bb
d)
light purple
33.
Which is a true statements about this picture?
a)
Brown is recessive
b)
Brown is dominant
c)
Blue is dominant
d)
Blue is codominant

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