Font size
WorksheetsGenetics Quiz
Total questions: 38
Worksheet time: 36mins
Which of the following traits are polygenic?
Freckles
Blood type
Eye color
Hair texture
What is a characteristic of polygenic traits?
They are influenced by multiple genes
They are controlled by a single gene
They are only found in males
They have a limited range of possibilities
Which of the following is an example of a codominant trait?
Blood type
Freckles
Height
Which chromosome are sex-linked traits usually found on?
X chromosome
Y chromosome
Z chromosome
W chromosome
Traits that are passed down and are found in your DNA are called _____________ traits.
inherited
acquired
homozygous
heterozygous
Which of the following is homozygous dominant?
RR
Rr
rR
rr
Which of the following is homozygous recessive?
RR
Rr
rR
rr
One uppercase and one lowercase letter are alleles for what type of trait?
Homozygous
Heterozygous (hybrid)
Phenotype
Allele
The letters that make up your genes are called what?
Alleles
Genotype
Phenotype
Probability
How many offspring will show the recessive trait?
0%
25%
50%
75%
What fraction of individuals will be homozygous dominant?
1/3
1/2
2/3
1/4
When two phenotypic traits are expressed at the same time, this is called what?
Complete dominance
Incomplete dominance
Codominance
Non-dominance
A dihybrid cross looks at how many traits at the same time?
1
2
3
4
A gene that always overpowers a recessive gene. Ex: Brown Eyes
Dominant Gene
Inherited Traits
Genetics
Recessive Gene
The structure inside cells that contain genes
Chromosomes
Dominant
Recessive
Instinct
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
A cross involving a single trait is known as?
dihybrid
monohybrid
hybrid
What trait is caused by non-functional proteins?
Dominate
Recessive
Sex-Linked
Polygenic
Meiosis creates
more genetic variation
less genetic variation
parent cells
What does polygenetic mean?
the traits is controlled by more than one gene
the trait is only controlled by one gene
the trait is expressed equally by both dominant alleles
Involves crossing over
Mitosis
Meiosis
Both
Produces four cells
Mitosis
Meiosis
Both
produces identical daughter cells
Mitosis
Meiosis
Both
forms gametes
Mitosis
Meiosis
Both
produces non-identical cells
Mitosis
Meiosis
Both
when there is cross over in chromosomes, there is an exchange of
Genetic information
energy
receptors
none of the above
If a plant has a chromosome number of 24 chromosomes. How many chromosomes does its gametes have?
5
10
12
48
CROSSING OVER INCREASES
LIFE SPAN
GENETIC VARIATION
THE NUMBER OF OFF-SPRING
ALL ARE TRUE
