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WorksheetsGenetics Review
Total questions: 38
Worksheet time: 1hrs 16mins
DNA is
The instructions for building different proteins
The instructions for building different nitrogenous bases
The instructions for building different molecules
The instructions for building different alleles
DNA is made up of...
a long chain of alleles
a long chain of sugar, phosphate, and bases
a long chain of amino acids
a long chain of proteins
The four nitrogenous bases within DNA include
glucose (G), apples (A), cherries (C), and trees (T)
glycerol (G), protein (P), deoxyribose (D), pentose (P)
guanine (G), cytosine (C), adenine (A), and thymine (T)
guanine (G), cytosine (C), uracil (U), and thymine (T)
AATTCCGGC
a sequence of DNA
a sequence of amino acids
a sequence of proteins
a sequence of RNA
One strand of DNA is made up of thousands of bases in a row. What's the name for a section of DNA that only contains some of the bases?
allele
protein
gene
bases
If a gene is a piece of DNA, an allele is...
the entire DNA molecule
the amino acids for that gene
the protein for that gene
the actual DNA sequence (A,T, C, G)
What's the difference between an allele and a gene?
A gene is a protein, an allele is a ribosome
A gene is a ribosome, an allele is a protein
A gene is a section of DNA, an allele is the actual DNA base sequence
A gene the actual DNA sequence, an allele is a piece of DNA.
A chromosome is...
A type of protein
A string of DNA
A string of DNA unwound
A string of DNA packed really tightly
A haploid cell...
Has one copy of each chromosome
Has two copies of each chromosome
Has three copies of each chromosome
Has four copies of each chromosome
A diploid cell
Has one copy of each chromosome
Has two copies of each chromosome
Has three copies of each chromosome
Has four copies of each chromosome
This image shows all the chromosomes in one human's skin cell. What kind of cell is this skin cell?
A haploid cell
A diploid cell
A heterozygous cell
A homozygous cell
A pair of chromosomes that have the same size, shape, and genes are called...
Heterozygous chromosomes
Anonymous chromosomes
Homologous chromosomes
Heterologous chromosomes
When two haploid cells (Sperm and egg) combine in fertilization, they form...
A fetus
A polar body
A blastocyst
A zygote
Diploid cells have pairs of...
Homologous chromosomes
Heterozygous chromosomes
Heterologous chromosomes
Haploid chromosomes
Why do diploid cells have homologous chromosomes (pairs)?
Both copies of the chromosome came from one grandparent, the grandma or the grandpa
Two copies of the chromosomes came from mom, the others came from dad
Both copies of the chromosome came from one parent, the mom or the dad
One copy of the chromosome came from mom, the other came from dad
How did we get all of our 46 chromosomes?
Sperm combines with egg and the zygote has all the chromosomes
Sperm combines with sperm and the zygote has all the chromosomes
Sperm combines with egg and the chromosome has all the zygotes
Random
How did your cells get one copy of each chromosome from mom and one from dad?
Photosynthesis (plant growth)
Meiosis (cell division to make haploid cells)
Fertilization (two haploid cells combine)
Mitosis (cell division to make diploid cells)
A zygote is a diploid cell because...
Not sure
It has one copy of each chromosome
It has three copies of each chromosome (two from sperm and one from egg)
It has two copies of each chromosome (one from sperm and one from egg)
Most of your cells (except egg/sperm) are diploid, meaning you have homologous chromosomes. This means...
You have four copies of each chromosome in most cells
You have three copies of each chromosome in most cells
You have two copies of each chromosome in most cells
You have one copy of each chromosome in most cells
A pair of homologous chromosomes have the same genes, but they could have different...
Combinations
Alleles
Proteins
Traits
A pair of homologous chromosomes that have different alleles means...
Each chromosome has a different DNA sequence at that location on the chromosome
Each chromosome has the same DNA sequence at that location on the chromosome
Each chromosome has genes at different locations on the chromosome
Each chromosome came from mom
When representing alleles, scientists use...
letters- X and Y
symbols- circle and square
symbols- hearts and hexagons
letters- capital and lowercase
A capital allele (ex: A) usually means...
the DNA sequence makes a stronger version of that protein
the DNA sequence makes a defective protein for that gene
the DNA sequence makes a working protein for that gene
the DNA sequence makes a weaker version of that protein
A lower case allele (ex: a) usually means...
the DNA sequence makes a stronger version of that protein
the DNA sequence makes a defective protein for that gene
the DNA sequence makes a working protein for that gene
the DNA sequence makes a weaker version of that protein
We call capital alleles...
heterozygous
dominant
recessive
homozygous
We call lower case alleles...
heterozygous
dominant
recessive
homozygous
A homologous pair of chromosomes that contains two of the same alleles (AA or aa) is called...
homozygous
heterozygous
purebred
hybrid
A homologous pair of chromosomes that contains two different alleles (Aa) is called...
homozygous
heterozygous
purebred
hybrid
The name of two alleles for a gene (AA) is called the...
Trait
Genotype
Phenotype
Zygote
The name of the physical characteristics as a result of a gene is called the...
Trait
Genotype
Phenotype
Zygote
The root word "homo" means
two
opposite
different
same
The root word "hetero" means
two
opposite
different
same
AA: This genotype is called
heterozygous dominant
heterozygous
homozygous dominant
homozygous recessive
Aa: This genotype is called
heterozygous dominant
heterozygous
homozygous dominant
homozygous recessive
aa: This genotype is called
heterozygous dominant
heterozygous
homozygous dominant
homozygous recessive
What will the phenotype be for a person with the AA skin color genotype
pale skin
dark skin
albino
light brown skin
What will the phenotype be for a person with the Aa skin color genotype
pale skin
dark skin
albino
light brown skin
What will the phenotype be for a person with the aa skin color genotype
pale skin
dark skin
albino
light brown skin
