WorksheetsCP Bio genetics refresher
Total questions: 19
Worksheet time: 1hrs 7mins
Segments of DNA that code for specific traits are referred to as:
RNA
genes
DNA splicing
Chromosome
Which option lists the three items in order from SMALLEST to LARGEST?
Chromosome - DNA - Gene
Gene - DNA - Chromosome
DNA - Gene - Chromosome
Chromosome - Gene - DNA
The genotype is:
the genetic makeup of an organism.
the physical appearance of an organism.
the deletion of a chromosome.
the passing of traits from parent to offspring.
What is an allele?
A section of DNA with the directions for making a protein
A genotype
The way an organism looks
Different version of a gene
Which of the following is ALWAYS true regarding inheriting traits:
Dominant traits are less likely to be seen in a population.
You must have only one recessive allele in order to express the recessive form of the trait.
The recessive form of a trait overpowers the dominant form.
You must have only one dominant allele in order to express the dominant form of the trait.
Which genotype would be classified as "homozygous dominant"?
ee
Tt
RR
Which genotype would be classified as "heterozygous"?
Bb
AA
rr
LL
Since we can see this organism is purple we can determine its _____.
genotype
phenotype
allelotype
sequence of DNA bases
Cystic Fibrosis (CF) is a genetic disorder that is controlled by a recessive allele on chromosome 7 which is NOT a sex chromosome. If a person suffering from CF were to marry an individual who is heterozygous for the trait, what % of their children would be expected to unaffected carriers of the trait?
0%
25%
50%
75%
This type of inheritance pattern shows BOTH alleles when an individual is heterozygous for the trait
sex-linked
this image is an example of
codominance
simple dominant and recessive/Mendelian inheritance
incomplete dominance
sex-linked
This is an example of ___________?
Incomplete dominance
Co-Dominance
Multiple alleles because there is a blue allele and a yellow allele
Sex-linked
This info will help you for the last questions in this set:
When determining someone's blood type there are 3 different alleles IA, IB, and i. The dominant/I alleles completely mask the recessive i allele. The only way to have type O blood is to have the genotype ii. To have type A blood you can be IAIA or IAi. To have type B blood you can be IBIB or IBi. To have type AB blood you must have the genotype IAIB.
Because the IA and IB alleles are seen together/at the same time this inheritance pattern is
incomplete dominance
codominance
simple dominant/recessive AKA Mendelian inheritance
If two parents are heterozygous for type A blood (their genotypes are both IAi), what is the probability that their offspring would have type O blood?
100 %
75%
50%
25%
If a father is IAIA and a mother is IAIB, what is the probability for a child with AB blood type?
0%
25%
50%
75%
If one of your parents is blood type A (genotype IAi) and the other is type B (genotype IBi), which of the following blood types could you be?
O
AB
A or B
Any of these
