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WorksheetsHeredity
Total questions: 53
Worksheet time: 54mins
Name
Class
Date
1.
One trait that is ALWAYS present and causes the other traits to disappear is a ________________________
a)
recessive trait
b)
aggressive trait
c)
absent trait
d)
dominant trait
2.
True or False: Recessive traits are ALWAYS present
a)
True
b)
False
3.
A ___________________ is a relationship between two numbers
a)
genetic
b)
trait
c)
ratio
d)
cycle
4.
______________________ is the mathematical chance that something will happen
a)
division
b)
selective breeding
c)
ratio
d)
probability
5.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
6.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
7.
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
8.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
9.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
10.
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?
a)
sex-linked trait
b)
polygenic trait
c)
codominant trait
d)
incomplete dominance trait
11.
I have 1 X chromosome and 1 Y chromosome. What am I?
a)
Male
b)
Female
12.
What percentage of the offspring will have this recessive disease?
a)
0%
b)
25%
c)
50%
d)
75%
13.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
14.
one set of instructions for an inherited trait
a)
heredity
b)
allele
c)
trait
d)
gene
15.
one of the alternative forms of a gene that governs a characteristic, such as hair color
a)
allele
b)
gene
c)
trait
d)
DNA
16.
Homozygous or heterozygous?
BB
BB
a)
Homozygous
b)
Heterozygous
17.
Which of the following is heterozygous?
a)
Hh
b)
gg
c)
HH
d)
GG
18.
Jackie is homozygous recessive for having dimples (D). What is her genotype?
a)
pp
b)
Dd
c)
dd
d)
DD
19.
True or false?
Heterozygous recessive traits have two identical allels expressed as lowercase
Heterozygous recessive traits have two identical allels expressed as lowercase
a)
True
b)
False
20.
He is known as the father of modern day genetics.
a)
Gregory Mendel
b)
Greg Mendel
c)
Gregor Mendel
d)
Grace Mendel
21.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
22.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
23.
AA and Aa always show up as
a)
dominant
b)
recessive
24.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
25.
Two heterozygous brown gerbils are crossed. If brown is dominant to white, what are the expected phenotypic results?
a)
25% Brown 75% White.
b)
50% Brown 50% White
c)
100% Brown
d)
75% Brown 25% White
26.
Which Law states that the dominant gene, if present, will be expressed as the phenotype?
a)
Law of Dominance
b)
Law of Segregation
c)
Law of Independent Assortment
d)
Law of Gravity
27.
What type of reproduction requires two parents?
a)
Asexual reproduction
b)
Sexual reproduction
28.
What is a genotype?
a)
description of your actual physical characteristics
b)
The set of genes in our DNA which is responsible for a particular trait.
c)
A set of observable characteristics
29.
Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?
a)
25%
b)
1%
c)
10%
d)
0%
30.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
31.
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
a)
0 in 4
b)
1 in 4
c)
2 in 4
d)
4 in 4
32.
aa always shows up as
a)
dominant
b)
recessive
33.
A green pea plant (GG) is being crossed with a green pea plant (Gg). What is the phenotype?
a)
100 % rainbow
b)
50% yellow and 50% green
c)
100% green
d)
100% yellow
34.
Two heterozygous red flower (white flowers are recessive) are crossed. What is the phenotype?
a)
75% red and 25% white
b)
25% red and 75% white
c)
100 White
d)
50% red 50% red
35.
The proteins found on the surface of RBCs that allow us to type blood as A, B, O or AB are called
a)
antigens
b)
antibodies
c)
aggluntates
d)
Rh factors
36.
Tyler has blood type AB+, he can donate blood to a person that has blood type?
a)
AB+
b)
AB-
c)
O-
d)
O+
37.
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%
38.
If two parents have type AB blood, what is the probability that their child will have type O blood?
a)
0%
b)
25%
c)
50%
d)
100%
39.
A normal human has ___ pairs of autosomes and ___ pair(s) of sex chromosomes.
a)
23,1
b)
22,1
c)
1, 22
d)
1, 23
40.
____ are chromosomes that contain genes for characteristics unrelated to sex.
a)
autosomes
b)
microsomes
c)
cosmos
d)
inheritance
41.
What must occur for a girl to be colorblind?
a)
each parent must be colorblind
b)
each parent must have the dominant allele for colorblindness
c)
each parent must have the recessive allele for colorblindness
d)
each parent must have two codominant alleles for colorblindness
42.
A person who has one recessive and one dominant allele for a trait is called a(n) _______________.
a)
carrier
b)
domineer
c)
passer
43.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
44.
This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?
a)
8
b)
5
c)
2
d)
3
45.
What do half colored symbols represent?
a)
The individual is a carrier (heterozygous).
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
46.
What does an open circle represent?
a)
Not Affected Male
b)
Not Affected Female
c)
Affected Male
d)
Affected Female
47.
Is this trait (the shaded individuals) dominant or recessive?
a)
dominant
b)
recessive
48.
Which gender can be carriers of colorblindness and not have it?
a)
Just males
b)
Just females
c)
Both genders
49.
What is the possible genotypes for both children in generation 3?
a)
BB & BB
b)
Bb & bb
c)
bb & bb
d)
Bb & Bb
50.
What is the mode of inheritance shown here?
a)
Autosomal Recessive
b)
Sex Linked
c)
Autosomal Dominant
51.
What is the mode of inheritance shown here?
a)
Autosomal Recessive
b)
Autosomal Dominant
c)
Sex Linked
52.
What is the mode of inheritance shown here?
a)
Autosomal Recessive
b)
Autosomal Dominant
c)
Sex Linked
53.
Color Blindness is a sex linked disease. Therefore, it HAS to affect which pair of chromosomes?
a)
21
b)
23
c)
24
d)
1-22
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