WorksheetsGenetics Test Review
Total questions: 40
Worksheet time: 1hrs 2mins
If a father's blood genotype is AA and the mother is AB genotype, what is the probability for they have a child with AB blood type?
0%
25%
50%
75%
In order to insert a human gene into plasmid, both must
code for the same gene product.
be cut by the same restriction enzyme.
originate from the same type of cell.
have identical sequences.
What is the role of a restriction enzyme in genetic engineering?
They cut the DNA at specific sequences.
They connect fragments of DNA to one another.
They attach the sugar phosphate backbones of DNA fragments with covalent bonds.
They cause bacteria to reproduce, cloning the gene.
What is the role of ligase in genetic engineering?
It attaches the backbones of different DNA fragments in order to seal them.
It cuts DNA at specific sequences.
It digests the DNA to make smaller pieces.
It causes bacteria to reproduce, cloning the gene.
Why is it necessary to insert a recombinant plasmid into a bacterial cell?
The cell is where the information in the plasmid DNA can be used to make the protein.
The cell uses the DNA to build carbohydrates.
This is necessary so that the cell can perform the photosynthesis process.
How is it possible to combine bacterial DNA with human DNA?
Humans have the same exact DNA sequence as bacteria
Both humans and bacteria share the same components of DNA.
Humans have bacteria inside of them.
Humans and bacteria are both eukaryotic organisms.
What is the mode of inheritance for this pedigree?
sex-linked dominant
autosomal dominant
autosomal recessive
sex-linked recessive
A male beetle has the genotype TtBb and a female beetle has the genotype TtBb. What would be phenotypic ratio seen in the offspring of these two beetles?
1:2:1:1
9:3:3:1
1:1:1:1
4:4:4:4
A cross between a white-coated cattle (RR) and red-coated cattle (rr) produce spotted offspring (Rr). This type of inheritance pattern is known as:
dominance
codominance
incomplete dominance
sex-linkage
In dogs, wire hair (D) is dominant over smooth hair (d). If two wire-haired dogs produce a smooth-haired pup, the genotypes of the parent dogs are most likely:
DD and Dd
DD and DD
Dd and Dd
Dd and dd
A mutation can be passed to offspring only if it takes place in this kind of cell
skin cell
gamete cell
somatic cell
blood cell
Males are more likely to suffer from a sex-linked disease or disorder because
males are the weaker sex
males have less DNA
males carry only 1 allele for sex-linked traits
males carry 2 alleles for sex-linked traits
What would you call the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during meiosis?
nondisjunction
anaphase I
nondiploidy
karyotype
What is the purpose of PCR?
To produce one copy of DNA.
To produce millions of copies of a specific region of DNA
To add nucleotides to a DNA sequence
To watch polymerase work.
What type of inheritance is exhibited when two alleles combine and create a blended phenotype?
Incomplete Dominance
Codominance
Mendelian Inheritance
Homozygous Inheritance
What is the genotypic ratio from this cross?
1 TT : 2Tt : 1 tt
4 Tall : 0
3 TT : 1 tt
4 TT : 0
Which genotype represents a female who is a carrier for hemophilia?
According to the Punnett square, what percentage of female offspring will have red eyes?
What gamete possibilities could come from this parent's genotype?
AB and aB
Ab, AB and ab
Ab only
AB, aB, ab and aB
What is recombinant DNA?
DNA from 2 different organisms combined
DNA from 2 different ribosomes
DNA that is separated out from a vector
What is the most logical sequence of steps for producing a gene of interest through recombinant DNA technology?
I) Insert recombinant DNA into a bacterial cell to replicate the gene of interest.
II) Cut the bacterial plasmid DNA using restriction enzymes.
III) Extract the gene of interest from human DNA.
IV) Insert the gene of interest into the plasmid.
V) Use ligase to seal plasmid DNA with the gene of interest.
I, II, IV, III, V
III, II, IV, V, I
II, III, V, IV, I
III, IV, V, I, II
