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The location on a chromosome where a particular gene is located is known as:
(A) Allele
(B) Dihybrid
(C) Locus
(D) Diploid -
Which of the following crosses would always result in offspring that only display the dominant phenotype?
(A) TT x tt
(B) Tt x Tt
(C) TT x TT
(D) Both TT x tt and TT x TT -
What aspect of Mendel's background gave him the necessary tools to discover the laws of inheritance?
(A) He was a monk
(B) He was a teacher
(C) He lived in Austria
(D) He had studied mathematics and probability -
What is the blending theory of inheritance?
(A) Mendel's theory of how traits of parents are passed to offspring through the gametes
(B) Darwin's theory of how traits are passed from all parts of the parent's body into the gamete
(C) The modern theory of how genetic information is passed from parents to offspring
(D) An old theory that said that offspring show traits intermediate between those of the parents -
In a Mendelian monohybrid cross, which generation is always completely heterozygous?
(A) F1 generation
(B) F2 generation
(C) F3 generation
(D) P generation -
In a Mendelian monohybrid cross, which generation is always completely homozygous?
(A) F2 generation
(B) F3 generation
(C) P generation
(D) None of these -
The F2 offspring of a monohybrid cross would show the genotype(s):
(A) AA and Aa
(B) Aa and aa
(C) AA, Aa, and aa
(D) AA only -
The F1 offspring of a monohybrid cross would show the genotype(s):
(A) AA and Aa
(B) Aa and aa
(C) AA, Aa, and aa
(D) Aa only -
The offspring of a monohybrid testcross would show the genotype(s):
(A) AA and Aa
(B) Aa and aa
(C) AA, Aa, and aa
(D) AA only
(E) aa only -
In which kind of cross would you expect to find a ratio of 3:1 among the F2 offspring?
(A) Monohybrid cross
(B) Dihybrid cross
(C) Testcross
(D) Polygenic cross -
The alternate forms of a gene on homologous chromosomes are called:
(A) Loci
(B) Alleles
(C) Homozygotes
(D) Tetrads -
"Phenotype" is based on the Greek root words for:
(A) Appearance and shape
(B) Hereditary and image
(C) Mathematical and form
(D) Birth or origin, and shape
(E) Different and image -
If the probability of event A is 3/4 and the probability of event B is 1/4, then the probability of both A and B occurring at the same time is:
(A) 3/4
(B) 1/4
(C) 1 or absolute certainty
(D) 3/16 -
In which kind of cross would you expect to find a ratio of 9:3:3:1 among the F2 offspring?
(A) Monohybrid cross
(B) Dihybrid cross
(C) Testcross
(D) Polygenic cross
(E) Multiple allele cross -
In which kind of cross would you expect to find two different kinds of ratios among the offspring, either 1:1 or 1:1:1:1?
(A) Monohybrid cross
(B) Dihybrid cross
(C) Testcross
(D) Polygenic cross -
If individuals exhibiting a dominant phenotype are crossed and produce only offspring with the dominant phenotype, what would be the logical genotype of the parents?
(A) Homozygous recessive
(B) Heterozygous dominant
(C) Homozygous dominant
(D) Unable to determine by the given information -
In the use of a Punnett square for genetic results of crossing individuals:
(A) All different kinds of sperm are lined up either horizontally or vertically
(B) All different kinds of eggs are lined up either horizontally or vertically
(C) The results show the offspring's expected genotypes
(D) All of the choices are correct -
The traits Mendel studied in garden peas showed:
(A) Complete dominance
(B) Incomplete dominance
(C) Epistasis
(D) Pleiotropy -
A classical example of incomplete dominance is:
(A) ABO blood groups in humans
(B) Height in garden peas
(C) Pink flowers in heterozygous snapdragons
(D) Coat color in rabbits -
A classical example of epistasis is:
(A) ABO blood groups in humans
(B) Height in garden peas
(C) Pink flowers in heterozygous snapdragons
(D) Albinism in humans and animals -
Skin color in humans, caused by several genes at several loci, is an example of:
(A) Multiple alleles at one locus
(B) Incomplete dominance
(C) Epistasis
(D) Polygenic inheritance
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