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WorksheetsGenetics Test review
Total questions: 25
Worksheet time: 30mins
Which box in the Punnett square represents a child who does not have freckles?
box 2
box 4
box 3
box 1
How many total chromosomes are shown in a normal human karyotype?
2
23
44
46
Select the statements that describe MITOSIS:
The type of cell division that produces body cells
Results in 4 haploid cells
Results in cells with identical genetic material
Results in cells with 46 chromosomes
The process of division occurs twice
Select the statements that describe MEIOSIS
The type of cell division that produces gametes
Results in 4 haploid cells
Results in cells with identical genetic material
Results in cells with 23 chromosomes
The process of division occurs twice
In the Punnett square, what is the probability for white fur?
(Click the picture to see it without the text)
Which sex is more likely to have a recessive, x-linked trait?
male
female
Changes in DNA sequences that affect genetic information are known as
replications
transformations
translations
mutations
This pedigree describes a trait that is Autosomal dominant. The allele for the presence of a white forelock is dominant. What is the probability of the couple labeled 2 of having a child with the trait?
25%
50%
75%
100%
Hemophilia is an X-linked recessive trait. Consider a cross between a woman who is a carrier and a man who suffers from hemophilia. Which of the following statements is/are true? Select all that apply.
All sons of these parents will be a hemophiliac
Sons who suffer from hemophilia received the hemophilia allele from their mother
Half of the daughters of this cross are predicted to be hemophiliacs
How many generations are shown in this figure?
2
4
6
3
The diagram shows the process of crossing over. Which claim about crossing over in chromosomes is best supported by the diagram?
Crossing over increases genetic diversity through deletion.
Crossing over decreases genetic diversity through mutation.
Crossing over increases genetic variation by creating new combinations of genes.
Crossing over decreases genetic diversity by inserting nucleotides into gene sequences.
Using this Punnett square, select the number of all the boxes where you would find homozygous offspring.
1
2
3
4
The diagram above shows a parent cell and the daughter cells that are produced after the parent cell divides. Which of the following best describes the daughter cells?
They are a result of transcription
They are a result of binary fission.
They have half the number of lipids that the parent cell has.
They have half the number of chromosomes that the parent cell has.
Colorblindness is an X-linked recessive trait. This trait is charted in the family above. What is the genotype and sex of individual III-2?
XAXa, female
XAXA, female
XaY, male
XAY, male
which of the following letters represent a homozygous dominant genotype?
DD, TT, EE
dd, tt, ee
Dd, Tt, Ee
which of the following letters represent a homozygous recessive genotype?
DD, TT, EE
dd, tt, ee
Dd, Tt, Ee
which of the following letters represent a heterozygous genotype?
DD, TT, EE
dd, tt, ee
Dd, Tt, Ee
the genetic makeup of a trait (the letters)
phenotype
genotype
chromosome
heterozygous
the physical expression/appearance of a trait
dominant allele
genotype
phenotype
recessive allele
The diagram shows a pedigree from a recessive inherited trait. If H represents the dominant allele and h represents the recessive allele, what are the genotypes of the parents shown in the pedigree?
Hh and Hh
hh and hh
HH and HH
Hh and HH
A condition is autosomal recessive. The pedigree shows the inheritance of this condition in a family.
Which of the following is the likely genotype of individual 1?
ee
Ee
XeY
XEXE
