Mendelian Genetics

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Question 1

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Short Answer

Please select the best match for each term.
A)One half of a complete set of chromosomes
B)Several complete sets of chromosomes
C)Possessing the correct number of chromosomes
D)Two complete sets of chromosomes
E)Possessing too few or too many copies of a single chromosome
-1)Haploid
2)Diploid
3)Euploid
4)Polyploid
5)Aneuploid

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Question 2

Free

Short Answer

Please select the best match for each term.
A)Genetic makeup of an organism
B)One parent must be homozygous recessive
C)Physical manifestation of a trait
D)Allele that has to be homozygous to be expressed
E)Always involves alleles of two genes
F)Allele that is expressed in the heterozygote
G)Always involves alleles of a single gene
-6)Monohybrid cross
7)Dihybrid cross
8)Test cross
9)Phenotype
10)Genotype
11)Dominant allele
12)Recessive allele

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Question 3

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Multiple Choice

In lilies,white flowers (W)are dominant to purple flowers (w).If two plants that are heterozygous for flower color are mated,the genotypic ratio of the offspring would be

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3:1.

1:1.

1:2:1.

9:3:3:1.

1:1:1:1.

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Question 4

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Multiple Choice

In a pea plant that is heterozygous for seed color,what proportion of gametes will carry the recessive allele?

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Question 5

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Multiple Choice

In his experiments,Mendel noted that when two traits are involved in a genetic cross,they are inherited independently of each other.The reason for this is that

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genes on the same chromosome separate during the formation of gametes.

alleles on the same gene separate during the formation of gametes.

genes on different chromosomes separate during the formation of gametes.

alleles on the same chromosome separate during the formation of gametes.

chromosomes often recombine.

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Question 6

Multiple Choice

Which of the following genotypes would not usually be represented in a gamete?

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Question 7

Multiple Choice

The chi-squared statistic can best be described as

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the standardized deviation of observed data from expected data.

a statistically significant test.

a statistical test used in genetics.

a statistical test that compares observed and expected population means.

None of these

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Question 8

Multiple Choice

In the F₂ generation,how many genotypic classes could be generated from a dihybrid cross of two heterozygotes in which the genes involved show complete dominance?

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Question 9

Multiple Choice

In peas,tall plants are dominant to short plants.A cross between a tall pea plant and a short pea plant results in half the progeny being tall,and the other half being short.Therefore,the tall parent plant is genotypically

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homozygous.

heterozygous.

hemizygous.

monozygous.

homogeneous.

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Question 10

Multiple Choice

If the results of a chi-square test of a given set of data show a P value greater than 0.05,then the null hypothesis

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must be rejected.

must be accepted.

must be rephrased.

cannot be rejected.

cannot be accepted.

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Question 11

Multiple Choice

A P value in statistics is

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a measure of the accuracy of a data set.

the probability of getting the observed data distribution by chance.

arbitrarily set depending on a statistical test.

a measure of the accuracy of a statistical test.

None of these

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Question 12

Multiple Choice

A man whose father expresses a recessive trait marries a woman whose brother expresses the same recessive trait.What is the likelihood that the newlyweds could have a child expressing the trait?

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Question 13

Multiple Choice

In humans,brown eye color (B)is dominant to blue eyes (b).A brown-eyed man marries a woman with brown eyes and they have three blue-eyed daughters.What are the genotypes of the man and the woman?

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BB and Bb

BB and BB

Bb and bb

Bb and Bb

bb and bb

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Question 14

Multiple Choice

The probability that two parents with a family of four will have one girl and three boys is

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Question 15

Multiple Choice

A couple with three girls is expecting a fourth child.The probability that this child is also a girl is

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Question 16

Multiple Choice

Net or overall probabilities are obtained by multiplying separate independent probabilities.This is formally known as

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the sum rule.

the chi-square test.

the product rule.

the sign test.

the probability rule.

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Question 17

Multiple Choice

Which of the following statements concerning the inheritance of a dominant trait is true?

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Every affected person must have at least one affected parent.

The trait is observed to skip generations.

An affected heterozygote will transmit the allele to all of his or her offspring.

Nonaffected parents can have affected offspring.

The trait is passed along paternal lines.

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Question 18

Multiple Choice

A dihybrid cross yields 320 F₂ offspring.How many are expected to resemble the homozygous recessive parental?

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180

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Question 19

Multiple Choice

In his monohybrid crosses for seed color in peas,Mendel reported 6,022 yellow seeds and 2,001 green seeds.How many of each color class were expected?

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4,011 green and 4,011 yellow

All should be green

All should be yellow

6,017 yellow and 2,006 green

2,006 yellow and 6,017 green

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Question 20

Multiple Choice

In holly,serrated leaves are dominant to smooth-edged leaves,and red berries are dominant to green berries.Two holly plants heterozygous for leaf edge shape and berry color are crossed together.Assuming that the two traits assort independently of one another,what proportion of the progeny will have smooth-edged leaves and green berries?

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Mendelian Genetics

In lilies,white flowers (W)are dominant to purple flowers (w).If two plants that are heterozygous for flower color are mated,the genotypic ratio of the offspring would be

In a pea plant that is heterozygous for seed color,what proportion of gametes will carry the recessive allele?

In his experiments,Mendel noted that when two traits are involved in a genetic cross,they are inherited independently of each other.The reason for this is that

Which of the following genotypes would not usually be represented in a gamete?

The chi-squared statistic can best be described as

In the F2 generation,how many genotypic classes could be generated from a dihybrid cross of two heterozygotes in which the genes involved show complete dominance?

In peas,tall plants are dominant to short plants.A cross between a tall pea plant and a short pea plant results in half the progeny being tall,and the other half being short.Therefore,the tall parent plant is genotypically

If the results of a chi-square test of a given set of data show a P value greater than 0.05,then the null hypothesis

A P value in statistics is

A man whose father expresses a recessive trait marries a woman whose brother expresses the same recessive trait.What is the likelihood that the newlyweds could have a child expressing the trait?

In humans,brown eye color (B)is dominant to blue eyes (b).A brown-eyed man marries a woman with brown eyes and they have three blue-eyed daughters.What are the genotypes of the man and the woman?

The probability that two parents with a family of four will have one girl and three boys is

A couple with three girls is expecting a fourth child.The probability that this child is also a girl is

Net or overall probabilities are obtained by multiplying separate independent probabilities.This is formally known as

Which of the following statements concerning the inheritance of a dominant trait is true?

A dihybrid cross yields 320 F2 offspring.How many are expected to resemble the homozygous recessive parental?

In his monohybrid crosses for seed color in peas,Mendel reported 6,022 yellow seeds and 2,001 green seeds.How many of each color class were expected?

In the F₂ generation,how many genotypic classes could be generated from a dihybrid cross of two heterozygotes in which the genes involved show complete dominance?

A dihybrid cross yields 320 F₂ offspring.How many are expected to resemble the homozygous recessive parental?