WorksheetsGenetics and Heredity Test Review
Total questions: 34
Worksheet time: 55mins
Name
Class
Date
1.
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
In the punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
2.
In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?
a)
0%
b)
25%
c)
50%
d)
75%
3.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
4.
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%
5.
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
6.
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
7.
_____________________ are cells that join to make offspring
a)
speed cells
b)
sex cells
c)
pea cells
d)
pedigree cells
8.
When humans breed purebred dogs to look a certain way and have traits that they like, this is an example of ___________________________
a)
Probably Breeding
b)
Sectional Breeding
c)
Selective Breeding
d)
Suspended Breeding
9.
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
10.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
11.
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
12.
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
13.
Which of the characteristics is a lion least likely to pass on to its offspring?
a)
fur color
b)
length of tail
c)
scars on leg
d)
body size
14.
What is a phenotype?
a)
The expression of a trait; physical appearance.
b)
refers to the genetic makeup of an individual
c)
An organism that has the same genes for a trait (ex. TT or tt)
d)
the passing of traits from parent to offspring
15.
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
16.
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%
17.
The cells produced via meiosis are called:
a)
sex cells
b)
somatic cells
c)
body cells
d)
skin cells
18.
If a body cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
19.
How are your chromosomes inherited?
a)
most of your chromosomes from your mother
b)
most of your chromosomes from your father
c)
a random number of chromosomes from each parent
d)
half your chromosomes from your mother and half from your father.
20.
Sexual reproduction requires _____ parents and asexual reproduction requires ___ parents
a)
1,1
b)
2,2
c)
2,1
d)
1,2
21.
What is an advantage of sexual reproduction?
a)
Allows genetic variation
b)
Only needs one parent
c)
Happens very quickly
d)
Offspring are exact copies of parent
22.
What is one disadvantage of sexual reproduction?
a)
Only one parent needed
b)
Off spring are exact copies of parents
c)
Happens very quickly
d)
Needs two parents
23.
What are some of the facts about sexual reproduction?
a)
Takes two mates to reproduce and takes a longer time to reproduce
b)
Takes one mate to reproduce and takes a shorter amount of time to reproduce
c)
Takes two mates to reproduce and takes a shorter amount of time to reproduce
d)
Takes one mate to reproduce and takes a shorter amount of time to reproduce
24.
What are some of the facts about asexual reproduction?
a)
Takes only one mate to reproduce and takes a longer time to reproduce
b)
Takes a shorter amount of time to reproduce and it takes two mates to reproduce
c)
Reproduces diverse offspring and takes a longer time to reproduce
d)
Takes only one mate to reproduce and takes a shorter time to reproduce
25.
The purpose of selective breeding is to
a)
Get bigger animals
b)
get smaller animals
c)
create animals with desirable traits
d)
create animals with bad traits
26.
The overall function of selective breeding is to
a)
Create organisms with desirable traits
b)
Create bigger organisms
c)
Create smaller organisms
d)
Create animals with more genetic mutations
27.
A farmer has bred his pineapple plants from the sweetest pineapples from his last harvest to get even sweeter pineapple plants. What is this an example of?
a)
Selective breeding
b)
Natural selection
c)
Extinction
d)
Mutagenesis
28.
Organisms within a population have genetic differences in their traits called.
a)
Genotypes
b)
Variation
c)
Natural Selection
d)
Heterozygous
29.
Use the following table to answer the next question. A farmer wants to grow extra-large, sweet oranges. Which plants should the farmer select to cross to get the desired set of characteristics?
a)
1 and 2
b)
2 and 4
c)
1 and 3
d)
4 and 5
30.
Tt represents a hybrid for stem height.
Can a hybrid have the recessive trait at any time?
Can a hybrid have the recessive trait at any time?
a)
Yes, it has the lower case letter for the recessive trait
b)
No, the dominant capital letter will always hide, or mask, the recessive trait
31.
An organism's physical appearance or visible traits...
a)
genotype
b)
inherit
c)
gene
d)
phenotype
32.
Genes are made of a pair of ____
a)
DNA
b)
Chromosome
c)
Alleles
d)
Phenotype
33.
The main goal of the Human Genome Project (HGP) was to:
a)
Identify the unique parts of each person's DNA.
b)
Identify genes responsible for human diseases.
c)
Identify genes responsible for human behavior.
d)
Determine the entire sequence of human DNA.
34.
a distinct sequence of nucleotides forming part of a chromosome, a ____ codes for a particular trait
a)
Gene
b)
Chromosome
c)
Pedigree
100 %
