WorksheetsGENETICS
Total questions: 40
Worksheet time: 28mins
When you cross two parents, each parent is responsible for passing _______ of their two alleles for each individual trait.
1
2
3
4
Grey (G) fur is dominant to brown (g) fur in mice. What would be the genotype of a mouse that is heterozygous?
GG
Gg
gg
GGG
Who was Gregor Mendel?
Father of genetics
Father of cells
Coined the term heredity
No one
If Mom is type A, and Dad is type AB, can their kid be type o?
Yes
No
What is AA
Homozygous Dominant
Heterozygous
Homozygous Recessive
Heterozygous dominant
What is Aa
Homozygous Dominant
Heterozygous
Homozygous Recessive
Heterozygous dominant
What is aa
Homozygous Dominant
Heterozygous
Homozygous Recessive
Heterozygous dominant
True or False: Mendel used pea plants because they grow quickly and have distinctly different colored flowers.
true
false
True or False: Self pollination is when a male plant and a female plant cross pollinate
true
false
True or False: Human cells have a diploid number of 40
true
false
Having two different allele forms for a particular gene. Ex. Aa
Heterozygous
Homozygous
Dominant
Recessive
True or False: You can be blood type AB because A and B are co-dominant
true
false
The genetic makeup of an organism. Example BB
genotype
phenotype
Dominant
Recessive
The physical look or the organism, such as brown eyes
genotype
phenotype
Dominant
Recessive
The more prevalent form of the gene, written as a capitol letter. Ex. A
genotype
phenotype
Dominant
Recessive
What is the condensed form of DNA called?
Chromosome
Nucleotides
Gene
Nucleus
Which of the following are the DNA nucleotides? (multiple answers possible)
Adenine (A)
Uracil (U)
Thymine (T)
Guanine (G)
Cytosine (C)
Which sex chromosomes are present in all mature human sperm cells?
both X and Y chromosomes
either X or Y chromosomes
only X chromosomes
only Y chromosomes
HIDE ANSWER
Hair color and eye color are examples of a person's....
recessive traits
genotype
dominant alleles
phenotype
When an organism has two alleles at a particular locus that are different, the organism is called
homozygous
heterozygous
dominant
recessive
If a pea plant were homozygous recessive for height, how would it's genotype be represented?
Tt
tt
TT
tT
The passing of traits from parents to offspring is known as....
hierarchy
traits
heredity
genetics
What is the definition of Phenotype?
The diagram that shows all the chromosomes of an individual
How many genes on one chromosome
The combination of alleles that control that an individual has for a particular trait
How a trait is expressed (what it looks like or what it does)
If tongue rolling is a dominant trait (R), which of the following statements are true? (3 answers)
An individual who can roll their tongue may have the genotype Rr
An individual who can roll their tongue may have the genotype rr
An individual with the genotype Rr will be able to partially roll their tongue
An individual who can roll their tongue may have the genotype RR
An individual who cannot roll their tongue will not have a dominant allele
DNA's 2 strands are held together by
oxygen bonds
carbon bonds
hydrogen bonds
phospodiester bonds
Which of the following best describes a DNA molecule?
made of amino acids
contains ribose
contains uracil
double helix
DNA is a polymer made of:
Purines
Nucleotides
Pyrimidines
phosphate
What are the three components of a nucleotide?
sugar, hydrogen, nitrogen base
sugar, oxygen, nitrogen base
sugar, phosphate, nitrogen base
sugar, phosphate, protein
A _______ is a segment of DNA that codes for a specific protein or RNA molecule.
chromosome
gene
gamete
chromatid
A _________ is DNA tightly coiled around proteins.
gene
chromosome
mutation
histone
The 2 exact copies of DNA in a chromosome are called
histone protein
genes
chromatin
chromatids
Chromosomes that are paired by size and content are called _______ chromosomes.
sister
homologous
heterozygous
chromatid
A gorilla’s body cells each contain 48 chromosomes. How many chromosomes did the gorilla inherit from its mother?
48
24
12
none of those
Which 2 molecules form the sides (backbone) of the DNA molecule?
deoxyribose sugar
nitrogenous bases
hydrogen bonds
phosphate groups
What is a recessive allele?
A trait that is always shown (capital letter)
A trait that can be hidden (lower case letter)
Alleles that are the same
Alleles that are different
Coat color in a dog breed is determined by incomplete dominance where three colors are produced (Brown, tan and white), and the brown coat allele (B) has incomplete dominance over the white coat allele (b). Which offspring ratio would be expected from a cross between a brown dog and a white dog?
A. 2 BB: 2 Bb
B. 4 Bb
C. 1 BB: 2 Bb: 1 bb
D. 2 BB: 2 bb
A cross between a red flower and a white flower produces red and white spotted flowers. Which type of inheritance pattern is indicated by these results?
A. polygenic
B. codominance
C. multiple alleles
D. incomplete dominance
Suppose the following point mutation occurred in the DNA. Will this mutation affect the protein resulting from this gene sequence?
Original DNA Sequence: ATA TTA AAT GGC CCG CCC GGG
Mutated DNA Sequence: ATA TTA AAT GGC CAG CCC GGG
A. Yes, because all mutations change the resulting protein.
B. No, because the amino acid sequence has not been changed.
C. Yes, because the 5th amino acid in the sequence has changed.
D. No, because mutations in the DNA do not affect the mRNA sequence.
The 2 exact copies of DNA in a chromosome are called ________.
chromatids
genes
mutations
pathogens
How many chromosomes does a human body cell have, total?
48
46
23
47
