WorksheetsUnderstanding Genes and Inheritance
Total questions: 20
Worksheet time: 10mins
What is a gene?
A type of cell in the body
A segment of DNA that carries instructions for a trait
A kind of protein
A disease caused by bacteria
Where are genes located?
In the cell membrane
In the cytoplasm
On chromosomes inside the nucleus
In the ribosomes
What do we call the different forms of a gene?
Chromosomes
Alleles
Traits
Nuclei
If a pea plant has two alleles for tallness ( T and t ), and T is dominant, what will be the height of a plant with genotype Tt ?
Short
Tall
Medium
Unknown
What is the term for the physical appearance of an organism?
Genotype
Phenotype
Chromosome
DNA
Which of the following best describes inheritance?
The process of making proteins
The passing of traits from parents to offspring
The breakdown of food
The movement of water in plants
How many chromosomes do most human body cells have?
12
23
46
92
What is a Punnett square used for?
To measure DNA
To predict the probability of traits in offspring
To see cells under a microscope
To count chromosomes
If both parents have the genotype tt for a trait, what genotype will their offspring have?
TT
Tt
tt
tT
Which scientist is known as the "father of genetics"?
Charles Darwin
Gregor Mendel
Albert Einstein
Louis Pasteur
What does it mean if a trait is "dominant"?
It is always harmful
It is only seen when two copies are present
It masks the effect of a recessive trait
It is found only in plants
Which of the following is an example of an inherited trait?
Riding a bicycle
Eye color
Speaking English
Writing neatly
What is the function of DNA in a cell?
To provide energy
To store genetic information
To digest food
To transport oxygen
If a trait is controlled by a recessive allele, what must the genotype be for the trait to show?
At least one dominant allele
Two recessive alleles
One dominant and one recessive allele
No alleles
Which of the following is NOT a possible genotype for a trait with alleles A (dominant) and a (recessive)?
AA
Aa
aa
AB
What is the genotype of an organism with two identical alleles for a trait called?
Heterozygous
Homozygous
Hybrid
Phenotype
Which of the following is an example of a phenotype?
TT
Blue eyes
Tt
tt
What is the probability of getting heads when flipping a coin, similar to predicting a single gene trait with two alleles?
10%
25%
50%
100%
Which of the following best describes a chromosome?
A type of protein
A structure made of DNA that contains genes
A sugar molecule
A cell organelle that makes energy
What is the main reason offspring resemble their parents?
They eat the same food
They inherit genes from their parents
They live in the same environment
They have the same friends
