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WorksheetsIntro to Genetics
Total questions: 21
Worksheet time: 2hrs 45mins
What is the study of heredity called?
Heredity
Genetics
Genes
Traits
What is a genotype?
The gene that determines a trait; represented by letters.
The physical description of a trait; what can be "seen."
The trait that shows, making the other trait.
The trait that is masked by a dominant trait.
What is a phenotype?
The gene that determines a trait; represented by letters.
The physical description of a trait; what can be "seen."
The trait that shows, making the other trait.
The trait that is masked by a dominant trait.
What is an allele?
A pair of genes that determines a trait.
A single gene for a trait.
The trait that shows.
The trait that is masked.
What is a gene?
A pair of alleles that together determine a trait.
The trait that is present and masks the other trait.
The triat that is masked.
Traits inherited from your parents.
What is a dominant trait?
When present it is the trait that shows.
A trait that you only need one of for it to be present.
The trait that masks all other traits.
A trait that requires two of for it to be present.
What is a recessive trait?
When present it is the trait that shows.
A trait that you only need one of for it to be present.
The trait that masks all other traits.
A trait that requires two of for it to be present.
A trait that is hidden by a dominant trait.
What is a heterozygous trait?
A trait that has one dominant gene and one recessive gene.
A trait that has two recessive genes.
A trait that has two dominant genes.
A trait that is represented by two capital letters or two lower case letters.
A trait that is represented by one capital letter and one lower case letter.
What is a homozygous trait?
A trait that has one dominant gene and one recessive gene.
A trait that has two recessive genes.
A trait that has two dominant genes.
A trait that is represented by two capital letters or two lower case letters.
A trait that is represented by one capital letter and one lower case letter.
A heterozygous dominant trait has__________________________.
one capital letter and one lower case letter
has two capital letters
has two lower case letters
has one dominant trait and one recessive trait
has two dominant traits or two recessive traits
A homozygous dominant trait has__________________________.
one capital letter and one lower case letter
has two capital letters
has two lower case letters
has one dominant trait and one recessive trait
has two dominant traits or two recessive traits
A homozygous recessive trait has__________________________.
one capital letter and one lower case letter
has two capital letters
has two lower case letters
has one dominant trait and one recessive trait
has two dominant traits or two recessive traits
What is a trait?
Inherited characteristics
Genes that contain the "instructions" for a particular trait.
The genotype for a living thing
Heredity is___________________.
The study of genetics
The study of living things
The passing of traits from parent to offspring
Brown eyes are a dominant trait.
Blue eyes are a recessive trait.
B = Brown eyes
b = Blue eyes
If a person has homozygous brown eyes, what would be the genotype?
BB
Bb
bb
Tall is a dominant trait.
Short is a recessive trait.
T = Tall
t = Short
If a person is heterozygous tall, what would be the genotype?
TT
Tt
tt
Tongue rolling is a dominant trait.
T = Can tongue roll
t = Cannot tongue roll
If someone is able to roll their tongue, what genotype does the person have?
TT
Tt
tt
Curly hair is a dominant trait.
C = has curly hair
c = does not have curly hair
If a person has the genotype Cc, what is their phenotype?
CC
Cc
Has curly hair
Does not have curly hair
If a person had the homozygous dominant gene for attached earlobes, what is their genotype?
Ee
EE
ee
If a person had the homozygous recessive gene for blue eyes, what is their genotype?
Bb
BB
bb
If a person had the heterozygous gene for tallness, what is their genotype?
TT
Tt
tt
