WorksheetsHeredity and Genetic Traits
Total questions: 25
Worksheet time: 25mins
Which piece of genetic information looks like a long twisted/coiled ladder?
Chromosome
DNA
ATP
Nucleus
Which genotype is homozygous recessive?
Bb
BB
bb
brown eyes
Which of the following traits is encoded in your DNA?
Your personality
Your likes and dislikes
Your intelligence
Your eye color
Which of the following statements is true?
Your set of DNA is the same as your siblings'
Your set of DNA is the same as your mother's
Your set of DNA is the same as your father's
Your set of DNA is unique to you
Characteristics passed from parents to their offspring.
behavior
learned trait
inherited trait
function
One trait that is ALWAYS present and causes the other traits to disappear is a ________________________
recessive trait
aggressive trait
absent trait
dominant trait
Dominant genes are represented by a ________
Male gene
lowercase letter
recessive trait
capital letter
When the two alleles of a gene are different
Heterozygous
Homozygous
Phenotype
Genotype
The brown eye trait is dominant over blue eyes. Which of the following genotypes best represents the phenotype for blue eyes?
BB
Bb
bb
bB
In the Punnett square, what belongs in the missing square?
tt
Tt
TT
Brown eyes are dominant over blue eyes. What is the probability that the offspring will have brown eyes in this cross?
25%
50%
75%
100%
Which genotype is hetrozygous?
Bb
BB
DD
dd
Which genotype is homozygous dominant?
Bb
bb
BB
Dd
Which is NOT an example of a phenotype?
black fur
blue eyes
brown hair
bb
_____________________ is the physical appearance of an organism (how it looks)
phenotype
ratio
recessive trait
heredity
Dominant or recessive?
tt
Dominant
Recessive
The two alleles that control the phenotype
phenotype
genotype
allele
gene
The different forms of a gene
trait
phenotype
genotype
allele
The genotype for a yellow plant is...
GG
Gg
gg
all of the choices result in yellow
Aa, DD, Ba, and yy are all examples of ---
genotypes
phenotypes
What is the phenotype of the heterozygous parent in the punnett square?
green
yellow
hybrid
purebred
Which of the following is an example of a homozygous recessive genotype?
Aa
AA
aa
aA
What is the term for a trait that is expressed when at least one dominant allele is present?
Recessive trait
Dominant trait
Codominant trait
Incomplete dominant trait
In a genetic cross between two heterozygous individuals (Bb x Bb), what is the probability of obtaining an offspring with a homozygous recessive genotype?
25%
50%
75%
100%
Which of the following best describes the concept of heredity?
The process by which organisms adapt to their environment
The passing of traits from parents to offspring
The random mutation of genes
The influence of the environment on gene expression
