Heredity Quiz


If you cross two heterozygous pea plants that are tall, what is the probability they will have offspring that are tall?

A. one in four

B. two in four

C. four in four

D. three in four

If two alleles are the same for a certain trait they are considered

A. Homozygous

B. Twins

C. Heterozygous

D. Common

Heredity is the passing of traits from _____________________ to _____________________
A. predators to prey
B. water to rain
C. parents to offspring
D. fungi to protists

What is cross pollination?
A. When pollen from a flower fertilizes itself or another flower on the same plant
B. When pollen from one flower fertilizes a flower on a different plant
C. A plant whose offspring share the same traits as the parent
D. A plant whose offspring is genetically different from the parent.

What is a gene?
A. An entire chromosome that codes for a trait
B. a piece of clothing
C. a piece of a DNA on chromosome that codes for a trait
D. Chemical messengers in your brain that code for a trait

The scientific study of heredity.

A. Genetics

B. Heredity

C. Probability

D. Pedigree

Which of the following is heterozygous or one dominant and one recessive allele?


B. tt

C. Gg


Which sentence is FALSE?
A. All organisms have 23 pairs of DNA.
B. Chromosomes are made of genes.
C. DNA is made out of 4 chemicals: adenine, cytosine, thymine, guanine
D. DNA is the recipe for life.

When the doctor operates on the patient’s eye, he is using

A. learned behavior.

B. acquired physical trait.

C. inherited physical trait.

D. instinct.

If a gene is always expressed or always shown with a capital letter it is

A. Bossy

B. Recessive

C. Yelling

D. Dominant

The allelle / (trait) that is “weaker”. The offspring will not have the trait represented unless there are two of these.

A. recessive allele

B. dominant allele

C. co-dominant allele

What is NOT an inherited trait of humans?
A. Favorite type of music
B. Freckles
C. Hair color
D. Height

Where are chromosomes found?

A. vacuole

B. cell membrane

C. nucleus

D. mitochondria

Which would be an example of a trait shaped by their environment?

A. Eye color

B. Hair color

C. Language they speak

D. Height

An organism’s appearance is known as its
A. heredity
B. phenotype
C. genotype
D. pedigree

Juan’s dog, Luna, was hit by a car. Fortunately, she lived and is healthy! But she is now missing a leg. Having only three legs is a(n)

A. inherited trait.

B. learned behavior.

C. instinct.

D. acquired trait.

Segments of DNA (Deoxyribonucleic acid) found in chromosomes that give instructions for producing a certain characteristic.

A. heredity

B. gene

C. allele

D. genotype

E. phenotype

The different forms of a gene.

A. Genes

B. Allele

C. Phenotype

D. Pedigree

The inherited combination of alleles is known as the offspring’s
A. heredity
B. phenotype
C. genotype
D. redigree

A unit of genetic material or factor that determines a trait

A. Carrier


C. chromosome

D. Gene

Which is the stronger gene that always shows itself?

A. Hybrid

B. Dominant

C. Pure

D. Recessive

What organism did Mendel study?

A. pea plants

B. onions

C. mice

D. cats

Different versions or forms of the same gene are called –
A. chromosomes
B. sex cells
C. nitrogen bases
D. alleles

When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered….

A. Incomplete Dominance

B. Codominance

A trait that is always hidden when the dominant allele is present.

A. Phenotype

B. Recessive allele

C. Genotype

D. Heredity


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