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WorksheetsGenetics and Heredity
Total questions: 18
Worksheet time: 15mins
If the gene for gray fur is recessive (b) and the gene for brown fur is dominant (B), what would the fur of a squirrel with the genotype Bb be
Brown
Gray
Brown and Gray
Black
The trait for a widow's peak is recessive (r) while the trait for a rounded hairline is dominant (R). If the father has the genotype RR and the mother has the genotype rr, what are the odds that the baby will have a rounded hairline?
0%
25%
50%
100%
The trait for blonde hair is recessive (b) and the trait for brown hair is dominant (B). If the father and mother have the genotype Bb, what are the odds that the baby will have the heterozygous genotype?
0%
25%
50%
75%
This pedigree demonstrates that the affected trait is
Dominant because it skips a generation
Recessive because it skips a generation
Dominant because it does not skip a generation
Recessive because it does not skip a generation
The purpose of a pedigree is to
track a certain trait that has been passed down through multiple generations
determine the relatedness of two samples of DNA
separate DNA based on size
determine the chromosome number of a species
The trait for straight hair is dominant (S) and the trait for curly hair is recessive (s). if the baby has curly hair what would most likely be the genotypes of the parents?
SSxss
SSxSs
SsxSs
A and B
The idea that dominant and recessive genes get passed down from parent to offspring was discovered by
Gregor Mendel
Rosalind Franklin
Watson and Crick
Albert Einstein
In a pedigree, an affected female would be represented by
A shaded square
An unshaded square
An unshade circle
A shaded circle
If a mom and a dad were to have a baby, which of the following combinations of genotypes would allow for the recessive trait to be expressed in the baby?
GGxGg
Ggxgg
GGxGG
GGxgg
A sequence of DNA that codes for a specific trait in the body is known as a
Gene
Chromosome
Chromatid
Gamete
Hereditary information can be found
In the nucleus, which has multiple chromosomes containing genes
In the ribosome, which has multiple chromosomes containing genes
In the nucleus, which has multiple proteins containing genes
In the ribosome, which has multiple proteins containing genes
How many sets of chromosomes are in a body cell
22
44
23
46
Which of the following statements is true about somatic cells and gametes
Somatic cells are sex cells and gametes are body cells
Somatic cells have the full set of chromosomes and gametes only have half the amount of chromosomes
Somatic cells are haploid and gametes are diploid
Gametes have a full set of chromosomes and somatic cells only have half the amount of chromosomes
A dad has attached earlobes and brown eyes and your mother has detached earlobes and blue eyes. Their baby has detached earlobes and brown eyes. This is an example of
DNA replication
Natural Selection
Evolution
Heredity
Which of the following is a homozygous dominant genotype?
hh
GG
Aa
tt
Which of the following is the heterozygous genotype?
bb
AA
CC
Dd
How many alleles are in the genotype for a simple trait?
1
2
3
4
