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Heredity Unit Review

Total questions: 42

Worksheet time: 42mins

Name
Class
Date
1.
_____________________ is the appearance of an organism, or how it looks
a)
phenotype
b)
ratio
c)
recessive trait
d)
heredity
2.
A ________________________ is used to predict the possible genotype from certain parents
a)
Mendel Grid
b)
Genetic Tic Tac Toe
c)
Punnett Square
d)
Pedigree Plot
3.
This trait is hidden whenever the dominant allele is present
a)
dominant allele
b)
codominance
c)
recessive allele
d)
Punnett Square
4.
An organism's genetic makeup, or allele combination
a)
fertilization
b)
genotype
c)
phenotype
d)
heterozygous
5.
An organism that has two different alleles for a trait (hybrid)
a)
fertilization
b)
genotype
c)
homozygous
d)
heterozygous
6.
An organism that has two identical alleles for a trait (purebred)
a)
genotype
b)
phenotype
c)
homozygous
d)
heterozygous
7.
This scientist was responsible for studying heredity in Austria in the 1800s...
a)
Einstein
b)
Mendel
c)
Punnett
d)
Watson
8.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
9.
B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 
a)
0%
b)
25%
c)
50%
d)
75%
10.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
11.

What is a gene?

a)

Section of DNA that provides instructions for making a protein

b)

Section of DNA that codes for ribosomes only

c)

Section of RNA

12.

What is the genotype ratio of Ff to ff?

a)

1:4

b)

1:3

c)

1:1

d)

4:0

13.

In fruit flies, the coloration of tan with black stripes (B) is DOMINANT, to a solid black body color (b). A biologist crosses a tan male with black stripes and a female with a solid black body color.


Which stated observation can lead the biologist to the stated conclusion about the genotype of the fruit fly in this cross?

a)

Observation: All offspring are black

Conclusion: The male has two recessive alleles (bb)

b)

Observation: All the offspring are tan with black stripes.

Conclusion: The male has two dominant alleles. (BB).

c)

Observation: Half the offspring are black.

Conclusion: The male has two dominant alleles (BB).

d)

Observation: Most of the offspring are tan with black stripes.

Conclusion: The male has two dominant alleles (BB).

14.

Which of the following BEST describes a sex-linked gene?

a)

A gene that is only found in females

b)

A gene that is only found in males

c)

A gene that causes a sexually transmitted disease

d)

A gene that is located on a sex chromosome

15.

The allele for red color (R) is DOMINANT. The allele for white color (r) is recessive. If Red flower #1 has a genotype of (Rr) , and you cross it with a white flower with a genotype of (rr). Which genotypes can we receive from the cross of the two flowers?

a)

Rr, Rr, rr, rr

b)

RR, RR, rr, rr

c)

Rr, Rr, Rr, Rr

d)

rr, rr, rr, rr

16.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
17.
Offspring receives two sets of _____________ (one from each parent)
a)
blue jeans
b)
genes
c)
machines
d)
pedigree
18.
When alleles are neither dominant nor recessive (As a result, both alleles are expressed in the offspring.).
a)
codominance
b)
probability
c)
recessive allele
d)
Punnett Square
19.

This is an example of ___________?

a)

Incomplete dominance

b)

Codominance

c)

Multiple Alleles

d)

Polygenic Inheritance

20.

This is an example of ___________.

a)

Incomplete Dominance

b)

Codominance

c)

Multiple Alleles

d)

Polygenic Inheritance

21.

Many genes determine 1 trait (ex: skin color)

a)

Incomplete Dominance

b)

Polygenic

c)

Codominance

d)

Multiple alleles

22.
For an XX female to express a recessive sex-linked trait, she must have....
a)
two recessive alleles
b)
a Y chromosome 
c)
one recessive allele
d)
two dominant alleles
23.

A man with type A blood marries a woman with Type AB blood. Based on what you know about blood types, what is the only blood type not possible for their children?

a)

A

b)

O

c)

AB

d)

B

24.
The 23rd pair of chromosomes that differ in males and females are called___.
a)
autosomes
b)
sex chromosomes
c)
multiple alleles
d)
polygenic
25.

Hemophilia is a recessive sex-linked trait. If H = normal & h = has hemophilia, which genotype represents a male with hemophilia.

a)

XHY

b)

XHXh

c)

XhXh

d)

XhY

26.

Colorblindness is a recessive, X chromosome sex-link disorder. Cross the parents to figure out which percentage of their offspring will be colorblind.

a)

25%

b)

0%

c)

75%

d)

50%

27.

Which term is correctly matched with the description?

a)

Co-dominance occurs when two traits blend together to form a new phenotype.

b)

Human skin color is an example of codominant trait.

c)

Incomplete dominance occurs when traits blend producing a third phenotype.

d)

Human blood type is not an example of multiple alleles.

28.

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

29.

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

30.

An allele is

a)

a specific version of a gene

b)

a mutated gene

c)

a frequently occurring gene

d)

a chromosome abnormality

31.

a photograph or picture of chromosomes grouped in ordered pairs is a ______________

a)

pedigree

b)

Punnett Square

c)

Venn Diagram

d)

Karyotype

32.
Which sex chromosomes would indicate a typical human male?
a)
XX
b)
X
c)
XY
d)
XXY
33.
What is the gender of the individual whose karyotype is seen in the image?
a)
Male
b)
Female
34.

Based on the karyotype, what is the sex of this baby?

a)

Male

b)

Female

35.
Which structure is labeled as B in the diagram?
a)
Centromere
b)
Chromosome
c)
Sister chromatids
36.
A pair of identical chromosomes shown in a karyotype, one inherited from mom, and one inherited from dad are called
a)
sister chromotids
b)
centromeres
c)
homologous chromosomes
d)
autosomes
37.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
38.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
39.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
40.
What is this?
a)
Pedigree
b)
Karyotype
c)
Venn diagram
d)
Punnett Square
41.
Give the genotype for person II-1, for this autosomal trait.
a)
GG
b)
Gg
c)
gg
d)
we cannot be 100% sure of the genotype
42.

In this pedigree, the shading represents people in the family with dark hair while the unshaded represents blondes. Is dark hair controlled by a dominant or recessive allele?

a)

Dominant

b)

Recessive

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