A child who is blood type A has a mother who is blood type B. In a paternity suit a man is accused of being the father. He has blood type AB. Is he the father? Yes No He cannot be excluded as the father. There is a 12.5% chance that he is the father. Question If a color-blind female has children, what do we know about all of her sons? It is impossible to know without knowing the father’s genotype. Half of the sons will be color-blind. All sons will have normal color vision. All sons will be color blind. Question What is true about sexual reproduction? Sexual reproduction produces a haploid zygote. Each parent contributes a haploid gene set to offspring. Sexual reproduction consists of mitosis only. Sexual reproduction involves the union of diploid gametes. Question Gametes of the heterogametic sex have different sex chromosomes; gametes of homogametic sex have the same sex chromosome. Question 4 options: True False Question In the ABO blood-type phenotype, which gene is the most epistatic? Question 5 options: A B O H Question options: A human individual with Klinefelter syndrom (XXYY) has (Arabic number) Barr bodies in each cell. Question Sex-influenced traits are encoded by ________ genes and sex-linked traits are encoded by _______ genes. autosomal; autosomal sex-chromosome; autosomal sex-chromosome; sex-chromosome autosomal; sex-chromosome Question Which one below is not true of male determination in humans? The ratio of the X chromosome and the autosomes is an important determinant. Genes on the X chromosome are also required for maleness. The presence of SRY on the Y chromosome is important for maleness. Genes on the autosomes also affect fertility. Question Which of the following explanations on "incomplete dominance" is false? options: F2 population have three different phenotypes. The genotype ratio and the phenotype ratio are the same. F1 individuals have either dominant or recessive phenotype. F2 phenotype ratio is typically 1:2:1 Question Males and females express the same amount of X-chromosome genes despite the fact that females have more X chromosomes. Animals approach this problem in different ways. Which of the following is an example? options: Female Caenorhabditis elegans express X-chromosome genes at 50%. Male fruit flies double the expression of their X-chromosome genes. Female humans inactivate one of their X chromosomes. all of the above

A child who is blood type A has a mother who is blood type B. In a paternity suit a man is accused of being the father. He has blood type AB. Is he the father? Yes No He cannot be excluded as the father. There is a 12.5% chance that he is the father. Question If a color-blind female has children, what do we know about all of her sons? It is impossible to know without knowing the father’s genotype. Half of the sons will be color-blind. All sons will have normal color vision. All sons will be color blind. Question What is true about sexual reproduction? Sexual reproduction produces a haploid zygote. Each parent contributes a haploid gene set to offspring. Sexual reproduction consists of mitosis only. Sexual reproduction involves the union of diploid gametes. Question Gametes of the heterogametic sex have different sex chromosomes; gametes of homogametic sex have the same sex chromosome. Question 4 options: True False Question In the ABO blood-type phenotype, which gene is the most epistatic? Question 5 options: A B O H Question options: A human individual with Klinefelter syndrom (XXYY) has (Arabic number) Barr bodies in each cell. Question Sex-influenced traits are encoded by __ genes and sex-linked traits are encoded by _ genes. autosomal; autosomal sex-chromosome; autosomal sex-chromosome; sex-chromosome autosomal; sex-chromosome Question Which one below is not true of male determination in humans? The ratio of the X chromosome and the autosomes is an important determinant. Genes on the X chromosome are also required for maleness. The presence of SRY on the Y chromosome is important for maleness. Genes on the autosomes also affect fertility. Question Which of the following explanations on "incomplete dominance" is false? options: F2 population have three different phenotypes. The genotype ratio and the phenotype ratio are the same. F1 individuals have either dominant or recessive phenotype. F2 phenotype ratio is typically 1:2:1 Question Males and females express the same amount of X-chromosome genes despite the fact that females have more X chromosomes. Animals approach this problem in different ways. Which of the following is an example? options: Female Caenorhabditis elegans express X-chromosome genes at 50%. Male fruit flies double the expression of their X-chromosome genes. Female humans inactivate one of their X chromosomes. all of the above

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter19: Introduction To Genetics

Section: Chapter Questions

Problem 6CT: The ABO blood system has been used to settle cases of disputed paternity. Suppose, as a geneticist,...

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Question

A child who is blood type A has a mother who is blood type B. In a paternity suit a man is accused of being the father. He has blood type AB. Is he the father?

	Yes
	No
	He cannot be excluded as the father.
	There is a 12.5% chance that he is the father.

Question

If a color-blind female has children, what do we know about all of her sons?

	It is impossible to know without knowing the father’s genotype.
	Half of the sons will be color-blind.
	All sons will have normal color vision.
	All sons will be color blind.

Question

What is true about sexual reproduction?

	Sexual reproduction produces a haploid zygote.
	Each parent contributes a haploid gene set to offspring.
	Sexual reproduction consists of mitosis only.
	Sexual reproduction involves the union of diploid gametes.

Question

Gametes of the heterogametic sex have different sex chromosomes; gametes of homogametic sex have the same sex chromosome.

Question 4 options:

	True
	False

Question

In the ABO blood-type phenotype, which gene is the most epistatic?

Question 5 options:

	A
	B
	O
	H

Question

options:

A human individual with Klinefelter syndrom (XXYY) has

(Arabic number) Barr bodies in each cell.

Question

Sex-influenced traits are encoded by ________ genes and sex-linked traits are encoded by _______ genes.

	autosomal; autosomal
	sex-chromosome; autosomal
	sex-chromosome; sex-chromosome
	autosomal; sex-chromosome

Question

Which one below is not true of male determination in humans?

	The ratio of the X chromosome and the autosomes is an important determinant.
	Genes on the X chromosome are also required for maleness.
	The presence of SRY on the Y chromosome is important for maleness.
	Genes on the autosomes also affect fertility.

Question

Which of the following explanations on "incomplete dominance" is false?

options:

	F2 population have three different phenotypes.
	The genotype ratio and the phenotype ratio are the same.
	F1 individuals have either dominant or recessive phenotype.
	F2 phenotype ratio is typically 1:2:1

Question

Males and females express the same amount of X-chromosome genes despite the fact that females have more X chromosomes. Animals approach this problem in different ways. Which of the following is an example?

options:

	Female Caenorhabditis elegans express X-chromosome genes at 50%.
	Male fruit flies double the expression of their X-chromosome genes.
	Female humans inactivate one of their X chromosomes.
	all of the above

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