AGRY 320 Genetics Final Exam Prep
questions well answered graded A+
2025/2026
A monogenic trait (meaning that only one gene is involved) in human is controlled by the D
locus. To this end, only 3 alleles (D1, D2, and D3) have been identified in Asia while only 2 alleles
(D1 and D2) have been identified in North America.
What are the possible human genotypes in Asia, considering that each individual receives one
allele from mother and one from father? - correct answer ✔✔D1D1; D2D2; D3D3; D1D2; D1D3;
D2D3
What are the possible human genotypes in North America, considering that each individual
receives one allele from mother and one from father? - correct answer ✔✔D1D1; D2D2; DD2
What are the homozygous genotypes in Asia? - correct answer ✔✔D1D1; D2D2; D3D3
What are the heterozygous genotypes in North America? - correct answer ✔✔D1D2
How many alleles are ever known that are involved in determination of blood type? - correct
answer ✔✔3
A genetically dominant trait means that most of the individuals in the population show that trait
- correct answer ✔✔False
The two alternatives for a trait are red and white and red is dominant. However, white is the
most common trait seen in the population. What is the genotype of a homozygous dominant
individual? - correct answer ✔✔RR
,In humans, sickle-cell anemia is caused by a recessive lethal allele Hbs; individuals who are
HbaHbs have sickle-cell allele, but are healthy.
The probability of two heterozygous individuals giving birth to a child with the sickle-cell
phenotype is - correct answer ✔✔25%
In humans, sickle-cell anemia is caused by a recessive lethal allele Hbs; individuals who are
HbaHbs have sickle-cell allele, but are healthy.
The probability of two heterozygous individuasl giving birth to a child with sickle-cell anemia is -
correct answer ✔✔25%
How many different types of gametes can the AaBbCcDd individual form? - correct answer
✔✔16
What proportion of the progeny of AaBbCcDd x AaBbCcDd gross will be aabbccdd? - correct
answer ✔✔1/256
How many alleles does an individual have in their DNA? - correct answer ✔✔2
What type of trait would blood type be considered? - correct answer ✔✔trigenic trait
How many types of gametes can be produced from an individual with genotype BBCC? - correct
answer ✔✔1
How many types of gametes can be produced from an individual with genotype bbCc? - correct
answer ✔✔2
How many types of gamete can be produced from an individual with genotype BbCc? - correct
answer ✔✔4
, If the phenotype controlled by a dominant allele at one locus overrides the phenotype
controlled by alleles at another locus, it is likely that the expected phenotypic ratio of progeny
from the cross AaBb x AaBb will be: - correct answer ✔✔12:3:1
The stages of mitosis in order (1 if first, 6 is final step) - correct answer ✔✔interphase,
prophase, metaphase, anaphase, telophase, daughter cells
The two main stages of the cell cycle are called - correct answer ✔✔mitosis and interphase
The first phase of mitosis is called: - correct answer ✔✔prophase
A cell with 10 chromosomes undergo mitosis, producing ___ daughter cells. Each daughter cell
has ___ chromosomes. - correct answer ✔✔2,10
Which of the following are sister chromatids? - correct answer ✔✔x,y or z,w
Which of the following best represent homologous chromosomes? - correct answer ✔✔the two
big ones
Four of the five following processes are a part of both meiosis and mitosis. But one is found in
meiosis (and is not a step in mitosis). Which one is only found in meiosis? - correct answer
✔✔homologous chromosome pairing
A sex-linked recessive allele c produces a red-green color blindness in humans. A normal woman
whose father was color blind marries a color-blind man. Make a Punnett square to help you
answer the following questions.
In humans, the X-linked genes in male are generally: - correct answer ✔✔hemizygous
questions well answered graded A+
2025/2026
A monogenic trait (meaning that only one gene is involved) in human is controlled by the D
locus. To this end, only 3 alleles (D1, D2, and D3) have been identified in Asia while only 2 alleles
(D1 and D2) have been identified in North America.
What are the possible human genotypes in Asia, considering that each individual receives one
allele from mother and one from father? - correct answer ✔✔D1D1; D2D2; D3D3; D1D2; D1D3;
D2D3
What are the possible human genotypes in North America, considering that each individual
receives one allele from mother and one from father? - correct answer ✔✔D1D1; D2D2; DD2
What are the homozygous genotypes in Asia? - correct answer ✔✔D1D1; D2D2; D3D3
What are the heterozygous genotypes in North America? - correct answer ✔✔D1D2
How many alleles are ever known that are involved in determination of blood type? - correct
answer ✔✔3
A genetically dominant trait means that most of the individuals in the population show that trait
- correct answer ✔✔False
The two alternatives for a trait are red and white and red is dominant. However, white is the
most common trait seen in the population. What is the genotype of a homozygous dominant
individual? - correct answer ✔✔RR
,In humans, sickle-cell anemia is caused by a recessive lethal allele Hbs; individuals who are
HbaHbs have sickle-cell allele, but are healthy.
The probability of two heterozygous individuals giving birth to a child with the sickle-cell
phenotype is - correct answer ✔✔25%
In humans, sickle-cell anemia is caused by a recessive lethal allele Hbs; individuals who are
HbaHbs have sickle-cell allele, but are healthy.
The probability of two heterozygous individuasl giving birth to a child with sickle-cell anemia is -
correct answer ✔✔25%
How many different types of gametes can the AaBbCcDd individual form? - correct answer
✔✔16
What proportion of the progeny of AaBbCcDd x AaBbCcDd gross will be aabbccdd? - correct
answer ✔✔1/256
How many alleles does an individual have in their DNA? - correct answer ✔✔2
What type of trait would blood type be considered? - correct answer ✔✔trigenic trait
How many types of gametes can be produced from an individual with genotype BBCC? - correct
answer ✔✔1
How many types of gametes can be produced from an individual with genotype bbCc? - correct
answer ✔✔2
How many types of gamete can be produced from an individual with genotype BbCc? - correct
answer ✔✔4
, If the phenotype controlled by a dominant allele at one locus overrides the phenotype
controlled by alleles at another locus, it is likely that the expected phenotypic ratio of progeny
from the cross AaBb x AaBb will be: - correct answer ✔✔12:3:1
The stages of mitosis in order (1 if first, 6 is final step) - correct answer ✔✔interphase,
prophase, metaphase, anaphase, telophase, daughter cells
The two main stages of the cell cycle are called - correct answer ✔✔mitosis and interphase
The first phase of mitosis is called: - correct answer ✔✔prophase
A cell with 10 chromosomes undergo mitosis, producing ___ daughter cells. Each daughter cell
has ___ chromosomes. - correct answer ✔✔2,10
Which of the following are sister chromatids? - correct answer ✔✔x,y or z,w
Which of the following best represent homologous chromosomes? - correct answer ✔✔the two
big ones
Four of the five following processes are a part of both meiosis and mitosis. But one is found in
meiosis (and is not a step in mitosis). Which one is only found in meiosis? - correct answer
✔✔homologous chromosome pairing
A sex-linked recessive allele c produces a red-green color blindness in humans. A normal woman
whose father was color blind marries a color-blind man. Make a Punnett square to help you
answer the following questions.
In humans, the X-linked genes in male are generally: - correct answer ✔✔hemizygous
