Genetics Review Question Preview (ID: 61787)


Vocabulary; Mendelian And Non-Mendelian Genetics Problems. TEACHERS: click here for quick copy question ID numbers.

Which of these is heterozygous?
a) AA
b) Bb
c) nn
d) XX

Which of these is homozygous recessive
a) AA
b) Bb
c) nn
d) Tt

Which of these is homozygous dominant?
a) AA
b) Bb
c) nn
d) Tt

Snapdragons are a type of flower that come in many colors. One common color is pink. To get the pink color, the plant must have one gene for the red color protein and one gene for the pink color protein. What type of inheritance is this?
a) Mendelian Inheritance
b) Codominance
c) Incomplete Dominance
d) Sex-Linked Inheritance

Hemophilia is a genetic disease that is caused by a mutation in a person's blood clotting factors. It is most commonly seen in men and the affected gene is found on the X chromosome. What type of inheritance is this an example of?
a) Mendelian Inheritance
b) Sex-Linked Inheritance
c) Codominance
d) Incomplete Dominance

For dog breeders, gene MC5R is one to consider. This gene controls how much a dog will shed. To breed a dog that won't shed to much, the breeder needs to make sure the puppy will inherit two recessive genes. What type of inheritance is this?
a) Mendelian Inheritance
b) Sex-Linked Inheritance
c) Incomplete Dominance
d) Codominance

Manx cats are known for having no tail! If a breeder wants to breed a true Manx cat, they must make sure that the kitten inherits at least one copy of the taillessness gene. What type of inheritance is this an example of?
a) Mendelian Inheritance
b) Incomplete Dominance
c) Sex-Linked Inheritance
d) Codominance

Gregor Mendel was the first person to study genetics. In one of his experiments, he crossed a pure bred yellow pea with a pure bred green pea. In the next generation, there were only yellow peas! How would you classify the green gene?
a) Dominant
b) Recessive
c) Sex-Linked
d) Incomplete

Human blood type is determined by three alleles: A and B are dominant and O is recessive. What are the chances of two people with type AB blood producing a child with AB blood?
a) 0%
b) 25%
c) 50%
d) 100%

Human blood type is determined by three alleles: A and B are dominant and O is recessive. What is the probability of producing an offspring with type O blood if the parent's genotypes are AO and BO?
a) 0%
b) 25%
c) 50%
d) 100%

Ther eis a breed of chickens that can be black or white. Their color gene follows a codominant pattern of inheritance. What color would a heterozygous chicken be?
a) Black
b) White
c) Gray
d) Black and White

If flower color follows and incomplete pattern of inheritance with red being dominant and white being recessive, what would be the chance of two pink flowers producing a white flower?
a) 0%
b) 25%
c) 50%
d) 75%

If blue eyes are recessive, brown eyes are dominant, and hazel eyes are heterozygous. What would be the chance of producing a hazel eyed offspring if you crossed a brown eyed person and a blue eyed person?
a) 0%
b) 50%
c) 75%
d) 100%

Colorblindness is a sex-linked recessive trait (noted with a * on the affected chromosome). What is the genotype of a biological female who's father was colorblind?
a) XX
b) XY
c) XX*
d) X*Y

Colorblindness is a sex-linked recessive trait (noted with a * on the affected chromosome). What is the chance of producing a colorblind child if you cross a heterozygous biological female with a colorblind biological male?
a) 0%
b) 25%
c) 50%
d) 75%

Colorblindness is a sex-linked recessive trait (noted with a * on the affected chromosome). What is the chance of producing a colorblind biological female individual if the parents are heterozygous biological female and colorblind biological male?
a) 0%
b) 25%
c) 50%
d) 75%

Hair color is an incomplete dominant trait with curly hair being dominant, straight hair being recessive, and curly hair being heterozygous. What hair texture will the children of a straight haired and curly haired person be?
a) Straight
b) Curly
c) Wavy
d) Bald

Two healthy parents have a child with a rare disorder that they have not heard of before. What type of allele is the rare disorder?
a) Dominant
b) Recessive
c) Heterozygous
d) Homozygous

Red cows can have white spots due to an incomplete dominant fur color gene. If a red cow gives birth to a red calf and a spotted calf, what color was its father?
a) Spotted
b) Red
c) White
d) Brown

Hitchhiker's thumb (when your thumb bends backwards) is a recessive trait. If a person with hitchhiker's thumb has a child with a normal thumbedperson who's parent had a hitchhiker's thumb, what is the chance their child will have a normal thumb?
a) 0%
b) 25%
c) 50%
d) 75%

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