To propose: A possible explanation for the observation that out of 1000 pairs of identical males and 1000 pairs of identical females, on the basis of three measure, the two male twins of a pair tended to be more alike in their scores than were two female twins of a pair. Introduction: Monozygotic twins are identical twins that are derived from a single egg fertilized with single sperm, forming a zygote. The zygote later divides into two resulting in genetically identical twins. Caroline Loat and her colleagues examined abilities such as social, cognitive and behavioral in identical pairs of female and male twins.

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Answer 1

Question

Chapter 4.3, Problem 47CQ

Summary Introduction

To propose:

A possible explanation for the observation that out of 1000 pairs of identical males and 1000 pairs of identical females, on the basis of three measure, the two male twins of a pair tended to be more alike in their scores than were two female twins of a pair.

Introduction:

Monozygotic twins are identical twins that are derived from a single egg fertilized with single sperm, forming a zygote. The zygote later divides into two resulting in genetically identical twins. Caroline Loat and her colleagues examined abilities such as social, cognitive and behavioral in identical pairs of female and male twins.

Summary Introduction

To determine:

The location of genes that influence pro-social behavior, peer problems and verbal ability.

Introduction:

The female carries two X chromosomes whereas male carry one X chromosome. Thus, the presence of two X chromosomes result in formation of double amount of protein which may result in diseased condition. Thus, the inactivation of one X chromosome in female is necessary. This phenomena is known as dosage compensation.

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Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…

Question #5: Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The genes show independent assortment. Recessive alleles at both loci are required for the facultative apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C. At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype. A facultative apomict male, capable of producing viable pollen, was crossed with a sexually reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following temperatures*: a) 15°C? b) 25°C? *for full credit, show crosses and genotypes where appropriate. Remember to position the female first (left side) in the cross. Type your answer here:

Answer 2

Question

Chapter 4.3, Problem 47CQ

Summary Introduction

To propose:

A possible explanation for the observation that out of 1000 pairs of identical males and 1000 pairs of identical females, on the basis of three measure, the two male twins of a pair tended to be more alike in their scores than were two female twins of a pair.

Introduction:

Monozygotic twins are identical twins that are derived from a single egg fertilized with single sperm, forming a zygote. The zygote later divides into two resulting in genetically identical twins. Caroline Loat and her colleagues examined abilities such as social, cognitive and behavioral in identical pairs of female and male twins.

Summary Introduction

To determine:

The location of genes that influence pro-social behavior, peer problems and verbal ability.

Introduction:

The female carries two X chromosomes whereas male carry one X chromosome. Thus, the presence of two X chromosomes result in formation of double amount of protein which may result in diseased condition. Thus, the inactivation of one X chromosome in female is necessary. This phenomena is known as dosage compensation.

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Answer 3

Question

Chapter 4.3, Problem 47CQ

Summary Introduction

To propose:

A possible explanation for the observation that out of 1000 pairs of identical males and 1000 pairs of identical females, on the basis of three measure, the two male twins of a pair tended to be more alike in their scores than were two female twins of a pair.

Introduction:

Monozygotic twins are identical twins that are derived from a single egg fertilized with single sperm, forming a zygote. The zygote later divides into two resulting in genetically identical twins. Caroline Loat and her colleagues examined abilities such as social, cognitive and behavioral in identical pairs of female and male twins.

Summary Introduction

To determine:

The location of genes that influence pro-social behavior, peer problems and verbal ability.

Introduction:

The female carries two X chromosomes whereas male carry one X chromosome. Thus, the presence of two X chromosomes result in formation of double amount of protein which may result in diseased condition. Thus, the inactivation of one X chromosome in female is necessary. This phenomena is known as dosage compensation.

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Answer 4

Question

Chapter 4.3, Problem 47CQ

Summary Introduction

To propose:

A possible explanation for the observation that out of 1000 pairs of identical males and 1000 pairs of identical females, on the basis of three measure, the two male twins of a pair tended to be more alike in their scores than were two female twins of a pair.

Introduction:

Monozygotic twins are identical twins that are derived from a single egg fertilized with single sperm, forming a zygote. The zygote later divides into two resulting in genetically identical twins. Caroline Loat and her colleagues examined abilities such as social, cognitive and behavioral in identical pairs of female and male twins.

Summary Introduction

To determine:

The location of genes that influence pro-social behavior, peer problems and verbal ability.

Introduction:

The female carries two X chromosomes whereas male carry one X chromosome. Thus, the presence of two X chromosomes result in formation of double amount of protein which may result in diseased condition. Thus, the inactivation of one X chromosome in female is necessary. This phenomena is known as dosage compensation.

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Answer 5

Chapter 4.3, Problem 47CQ

Summary Introduction

To propose:

A possible explanation for the observation that out of 1000 pairs of identical males and 1000 pairs of identical females, on the basis of three measure, the two male twins of a pair tended to be more alike in their scores than were two female twins of a pair.

Introduction:

Monozygotic twins are identical twins that are derived from a single egg fertilized with single sperm, forming a zygote. The zygote later divides into two resulting in genetically identical twins. Caroline Loat and her colleagues examined abilities such as social, cognitive and behavioral in identical pairs of female and male twins.

Summary Introduction

To determine:

The location of genes that influence pro-social behavior, peer problems and verbal ability.

Introduction:

The female carries two X chromosomes whereas male carry one X chromosome. Thus, the presence of two X chromosomes result in formation of double amount of protein which may result in diseased condition. Thus, the inactivation of one X chromosome in female is necessary. This phenomena is known as dosage compensation.

Answer 6

Chapter 4.3, Problem 47CQ

Summary Introduction

To propose:

A possible explanation for the observation that out of 1000 pairs of identical males and 1000 pairs of identical females, on the basis of three measure, the two male twins of a pair tended to be more alike in their scores than were two female twins of a pair.

Introduction:

Monozygotic twins are identical twins that are derived from a single egg fertilized with single sperm, forming a zygote. The zygote later divides into two resulting in genetically identical twins. Caroline Loat and her colleagues examined abilities such as social, cognitive and behavioral in identical pairs of female and male twins.

Answer 7

Chapter 4.3, Problem 47CQ

Summary Introduction

To propose:

A possible explanation for the observation that out of 1000 pairs of identical males and 1000 pairs of identical females, on the basis of three measure, the two male twins of a pair tended to be more alike in their scores than were two female twins of a pair.

Introduction:

Monozygotic twins are identical twins that are derived from a single egg fertilized with single sperm, forming a zygote. The zygote later divides into two resulting in genetically identical twins. Caroline Loat and her colleagues examined abilities such as social, cognitive and behavioral in identical pairs of female and male twins.

Answer 8

Summary Introduction

To determine:

The location of genes that influence pro-social behavior, peer problems and verbal ability.

Introduction:

The female carries two X chromosomes whereas male carry one X chromosome. Thus, the presence of two X chromosomes result in formation of double amount of protein which may result in diseased condition. Thus, the inactivation of one X chromosome in female is necessary. This phenomena is known as dosage compensation.

Answer 9

Summary Introduction

To determine:

The location of genes that influence pro-social behavior, peer problems and verbal ability.

Introduction:

The female carries two X chromosomes whereas male carry one X chromosome. Thus, the presence of two X chromosomes result in formation of double amount of protein which may result in diseased condition. Thus, the inactivation of one X chromosome in female is necessary. This phenomena is known as dosage compensation.

Answer 10

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Answer 13

Ch. 4.1 - Prob. 15AQP Ch. 4.1 - Prob. 16AQP Ch. 4.1 - Prob. 17AQP Ch. 4.1 - Prob. 18AQP Ch. 4.1 - Prob. 19AQP Ch. 4.1 - Prob. 1CC Ch. 4.1 - Prob. 1COQ Ch. 4.1 - Prob. 20AQP Ch. 4.1 - Prob. 21AQP Ch. 4.1 - Prob. 2CC

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