Nerdy Words
Unzipping the Genes
Give Peas a Chance
All in the Mix
You Are Not the Father!
100
What tool do geneticists use to determine the mathematical probability of the potential combinations of genotypes that can occur in offspring, given the genotypes of the parents? A) gel electrophoresis B) karyotype C) pedigree D) Punnett square
What is D) Punnett square
100
A dog breeder has a stud dog expressing the dominant phenotype. He wants to know the dog's genotype. How can the breeder determine that information? A) Mate it with a heterozygous female. B) Mate it with a homozygous dominant female. C) Mate it with a homozygous recessive female. D) Mate it with a dominant phenotype expressing female.
What is C) Mate it with a homozygous recessive female.
100
What biological concept was Mendel studying when he crossed pea plants many times over many generations? A) imbalance in ecosystems B) predator-prey relationships C) dominant and recessive traits D) male and female genetic differences
What is C) dominant and recessive traits
100
Sarah crosses red flowers with white flowers and gets all pink offspring. What pattern of inheritance is Sarah seeing? A) codominance B) corecessive C) incomplete dominance D) multiple alleles
What is C) incomplete dominance
100
A doctor advised a couple to have a pedigree created for their fetus. Which questions can be answered by performing the test? A) Does the fetus have any genetic disorder? B) How is the fetus developing in the mother's womb? C) Will the fetus have any heart-related disorders in future? D) Do the parents have any family history of a genetic disorder?
What is D) Do the parents have any family history of a genetic disorder?
200
A male received a recessive trait from unaffected parents. Based on this, we know that his mother is A) homozygous dominant B) heterozygous C) homozygous recessive D) codominant
What is B) heterozygous
200
In gerbils, black coat color (B) is dominant over brown coat color (b). A black gerbil and a brown gerbil mate. In order to set up a Punnett square to predict the possible coat colors of the offspring, what is the first question that must be answered? A) Which gerbil is the female? B) What is the genotype of the black gerbil? C) What is the phenotype of the brown gerbil? D) How many offspring do gerbils typically produce?
What is B) What is the genotype of the black gerbil?
200
The biological selection of a particular allele for a trait to be passed to offspring has nothing do with the selection of the allele for another trait. Which of the following supports this statement? A) law of independent assortment B) law of dominance C) law of segregation D) law of recessiveness
What is B) law of independent assortment
200
In Shorthorn cattle, when a cow with a solid red coat color mates with a cow with a solid white coat color, they always produce offspring with a roan (both red and white) coat color. This is an example of what type of inheritance pattern? A) codominance B) incomplete dominance C) multiple allele D) sex-linked
What is A) codominance
200
Paul is creating a pedigree. What information can he gain from the pedigree? A) the number of children he will have B) the number of diseases he will get C) whether or not the trait is caused by pollution D) how he inherited a particular trait
What is D) how he inherited a particular trait
300
To model the law of segregation along the outside of a Punnett square, we write out the ____________ that could possibly be formed by meiosis. A) genotypes B) phenotypes C) gametes D) chromosomes
What is C) gametes
300
A male fruit fly is homozygous dominant for gray-body color (G) and is crossed with a female fruit fly that is homozygous recessive for ebony-body color (g). What are the probable phenotypes of the offspring? A) 25% gray, 75% ebony B) 50% gray, 50% ebony C) 100% ebony D) 100% gray
What is D) 100% gray
300
When a red bull (RR) is bred with a white cow (WW), a roan calf (RW) is sometimes produced. Which of Mendel's laws has been violated? A) Law of dominance B) Law of independent assortment C) Law of segregation D) Law of unit characters
What is A) Law of dominance
300
In chickens, the allele 'W' produces white-feathered chickens, while allele 'B' produces black-feathered chickens. A combination of both alleles produces chickens with a mix of both white and black feathers, called speckled. Which cross has more chances of producing speckled offspring? A) WW with BW B) WW with BB C) BW with BW D) BW with BB
What is B) WW with BB
300
A man with type AB blood marries a woman with type A blood. What are the possible blood types of their offspring if the woman's mother had type O blood? A) A or B B) A or AB C) A, AB, or O D) A, B, or AB
What is D) A, B, or AB
400
What type of inheritance controls blood types in humans? A) incomplete dominance B) polygenic inheritance C) multiple alleles D) recessive genes
What is C) multiple alleles
400
Two heterozygous tall plants (Tt) are crossed. What are the expected genotypes and percentages of this cross? A) TT 50%; Tt 50% B) TT 25%; tt 75% C) Tt 25%; TT 50%; tt 25% D) TT 25%; Tt 50%; tt 25%
What is D) TT 25%; Tt 50%; tt 25%
400
In fruit flies, the traits for a yellow body and white eyes are always inherited together, violating the law of independent assortment. Which conclusion can be drawn from this phenomenon? A) The traits are controlled by one gene. B) Both traits are dominant. C) The genes for the traits are adjacent in the genome. D) The species has only one allele for each trait.
What is C) The genes for the traits are adjacent in the genome.
400
Eye color in human beings is a(n) A) polygenic trait. B) acquired trait. C) inherited trait. D) environmentally influenced trait.
What is A) polygenic trait.
400
A woman who is a carrier for hemophilia, a sex-linked recessive trait, marries a man who is normal. If they have a son, how likely is it that he has hemophilia? A) 0% B) 25% C) 50% D) 75%
What is C) 50%
500
In this form of alternative dominance, two alleles are equally dominant. A) incomplete dominance B) codominant C) multiple allele D) sex-linked
What is A) incomplete dominance
500
An experiment isolated two genetic traits in mice: fur color and tail length. Black fur (B) is dominant over tan fur (b), and short tails (S) are dominant over long tails (s). A dihybrid cross was made for two heterozygous black, heterozygous short-­tailed mice (BbSsxBbSs). Of the 16 possible offspring produced, how many are mice that are black with long tails? A) 1 B) 2 C) 3 D) 4
What is B) 3
500
Nondisjunction during meiosis results in an abnormal number of chromosomes in one or more gametes. In some cases of nondisjunction, a single chromosome fails to separate. In others, none of the chromosomes separate. Suppose an egg is produced in which none of the chromosomes separate during meiosis II. What is the chromosome number of the zygote that results if this egg is fertilized by a normal sperm? A) 1n B) 2n C) 2n + 1 D) 3n
What is D) 3n
500
The cross BY x BY illustrates a cross between two flowers in which the B represents blue flowers, and the Y represents yellow flowers. If the trait for flower color in these plants showed codominance instead, what would be the expected outcome of this cross? A) 50% of the flowers would be yellow. B) 50% of the flowers would be blue. C) 50% of the flowers would be green. D) 50% of the flowers would show both blue and yellow colors.
What is D) 50% of the flowers would show both blue and yellow colors.
500
My brother and I (a girl) both have a genetic disorder. However, our oldest brother does not, nor do our parents. What must the genotype of our dad be? A) H h B) h h C) Xh Y D) X Yh
What is A) H h
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