WorksheetsGenetics Vocabulary
Total questions: 10
Worksheet time: 5mins
What does the term 'genotype' describe?
The physical characteristics displayed by an organism.
The alleles that an organism contains.
The process of cell division.
The environment of an organism.
What does the term 'Phenotype' describe?
The alleles that an organism contains
The physical characteristics displayed by an organism
The genetic code of an organism
The food an organism eats
Fill in the blank: A dominant allele is always expressed if it is present. The allele is represented with a capital letter: ____
D
d
a
b
Fill in the blank: A recessive allele is only expressed when there are two recessive alleles present. The trait is represented with a lowercase letter: ____
d
A
B
C
When both alleles of a gene are the same, the organism is called ________.
Homozygous
Heterozygous
Dominant
Recessive
Fill in the blank: Homozygous dominant alleles are represented by two identical capital letters: ____
DD
Dd
dd
DC
Fill in the blank: Homozygous recessive alleles are represented by two identical lowercase letters: ____
dd
DD
Dd
dD
What is a Punnett square used for in genetics?
To predict the probability of offspring inheriting particular traits
To measure the size of chromosomes
To identify genetic mutations
To determine the age of genes
The two different forms of a gene are called ________.
zygotes
traits
phenotypes
alleles
How are alleles inherited?
From the mother only
From the father only
From both parents
Randomly from the environment
