Suppose that a male with a beak depth of 10 mm mated with a female with a beak depth of 8 mm. What would the expected beak depth of the offspring be? Would it matter if the female’s beak was 10 mm and the male’s 6 mm?

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Answer 1

Textbook Question

Chapter 21, Problem 1DA

Suppose that a male with a beak depth of 10 mm mated with a female with a beak depth of 8 mm. What would the expected beak depth of the offspring be? Would it matter if the female’s beak was 10 mm and the male’s 6 mm?

Expert Solution & Answer

Summary Introduction

To determine: The expected beak depth of the offspring produced by the mating of males with beak depth of 10 mm and female with beak depth of 8 mm. The effect on the beak size of offspring if the female’s beak was 10 mm and male’s 6mm.

Introduction: The variety of processes can lead to evolutionary change in an organism. The English naturalist, Charles Darwin, proposed the Darwinian theory of biological evolution by natural selection, which is accepted by most of the evolutionary biologists.

Explanation of Solution

Darwin’s finches are an example of evolution by natural selection. Darwin observed that the species of the finches were closely related and similar to each other except for their beaks. Darwin also observed that the difference between the beak sizes had evolved the adaption of various species to use different food resources.

Some species of finches feed on small tender seeds, but due to depletion of these seeds, the birds resort to larger and hard seeds. The large seeds were consumed by the birds with shorter, more profound, and more powerful beaks and survived better, whereas when the plants bear an abundance of small seeds, the birds with long and shallow beaks survived better. The depth of the beaks of parents is similar to the offspring. The mean of parents' beak depth will be 9mm, so the beak depth of the offspring will be approximately 9mm.

The depth of the beak does not depend on the sex of the parent. However, some points scatter close to the line of regression, which suggests that sex of the parent does not affect the beak depth of the offspring.

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Peter Boag, studied the inheritance of beak depth in Galapagos finches by looking at the relationship between parent beak depth (in mm) and that of their offspring. He collected two sets of parent offspring data, once in 1976 and again in 1978. For both years he followed birds to determine which pairs belonged to which nests. Most of the parents had been previously captured so their beak depths were known. He then captured the offspring when they fledged and measured their beak depth. He calculated the "midparent" beak depth (the average beak depth of the two parents) and then compared that to beak depth of their offspring. Here is what he found in 1976: Assume that in 1978, all the finches with beak depths less than 9.0 mm died due to prolonged drought. Use your knowledge of how quantitative traits respond to selection and the following relationship, R = h2S, to determine the following: Selection differential. Predicted response…

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Answer 2

Textbook Question

Chapter 21, Problem 1DA

Suppose that a male with a beak depth of 10 mm mated with a female with a beak depth of 8 mm. What would the expected beak depth of the offspring be? Would it matter if the female’s beak was 10 mm and the male’s 6 mm?

Expert Solution & Answer

Summary Introduction

To determine: The expected beak depth of the offspring produced by the mating of males with beak depth of 10 mm and female with beak depth of 8 mm. The effect on the beak size of offspring if the female’s beak was 10 mm and male’s 6mm.

Introduction: The variety of processes can lead to evolutionary change in an organism. The English naturalist, Charles Darwin, proposed the Darwinian theory of biological evolution by natural selection, which is accepted by most of the evolutionary biologists.

Explanation of Solution

Darwin’s finches are an example of evolution by natural selection. Darwin observed that the species of the finches were closely related and similar to each other except for their beaks. Darwin also observed that the difference between the beak sizes had evolved the adaption of various species to use different food resources.

Some species of finches feed on small tender seeds, but due to depletion of these seeds, the birds resort to larger and hard seeds. The large seeds were consumed by the birds with shorter, more profound, and more powerful beaks and survived better, whereas when the plants bear an abundance of small seeds, the birds with long and shallow beaks survived better. The depth of the beaks of parents is similar to the offspring. The mean of parents' beak depth will be 9mm, so the beak depth of the offspring will be approximately 9mm.

The depth of the beak does not depend on the sex of the parent. However, some points scatter close to the line of regression, which suggests that sex of the parent does not affect the beak depth of the offspring.

Want to see more full solutions like this?

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Answer 3

Textbook Question

Chapter 21, Problem 1DA

Suppose that a male with a beak depth of 10 mm mated with a female with a beak depth of 8 mm. What would the expected beak depth of the offspring be? Would it matter if the female’s beak was 10 mm and the male’s 6 mm?

Expert Solution & Answer

Summary Introduction

To determine: The expected beak depth of the offspring produced by the mating of males with beak depth of 10 mm and female with beak depth of 8 mm. The effect on the beak size of offspring if the female’s beak was 10 mm and male’s 6mm.

Introduction: The variety of processes can lead to evolutionary change in an organism. The English naturalist, Charles Darwin, proposed the Darwinian theory of biological evolution by natural selection, which is accepted by most of the evolutionary biologists.

Explanation of Solution

Darwin’s finches are an example of evolution by natural selection. Darwin observed that the species of the finches were closely related and similar to each other except for their beaks. Darwin also observed that the difference between the beak sizes had evolved the adaption of various species to use different food resources.

Some species of finches feed on small tender seeds, but due to depletion of these seeds, the birds resort to larger and hard seeds. The large seeds were consumed by the birds with shorter, more profound, and more powerful beaks and survived better, whereas when the plants bear an abundance of small seeds, the birds with long and shallow beaks survived better. The depth of the beaks of parents is similar to the offspring. The mean of parents' beak depth will be 9mm, so the beak depth of the offspring will be approximately 9mm.

The depth of the beak does not depend on the sex of the parent. However, some points scatter close to the line of regression, which suggests that sex of the parent does not affect the beak depth of the offspring.

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Answer 4

Textbook Question

Chapter 21, Problem 1DA

Suppose that a male with a beak depth of 10 mm mated with a female with a beak depth of 8 mm. What would the expected beak depth of the offspring be? Would it matter if the female’s beak was 10 mm and the male’s 6 mm?

Expert Solution & Answer

Summary Introduction

To determine: The expected beak depth of the offspring produced by the mating of males with beak depth of 10 mm and female with beak depth of 8 mm. The effect on the beak size of offspring if the female’s beak was 10 mm and male’s 6mm.

Introduction: The variety of processes can lead to evolutionary change in an organism. The English naturalist, Charles Darwin, proposed the Darwinian theory of biological evolution by natural selection, which is accepted by most of the evolutionary biologists.

Explanation of Solution

Darwin’s finches are an example of evolution by natural selection. Darwin observed that the species of the finches were closely related and similar to each other except for their beaks. Darwin also observed that the difference between the beak sizes had evolved the adaption of various species to use different food resources.

Some species of finches feed on small tender seeds, but due to depletion of these seeds, the birds resort to larger and hard seeds. The large seeds were consumed by the birds with shorter, more profound, and more powerful beaks and survived better, whereas when the plants bear an abundance of small seeds, the birds with long and shallow beaks survived better. The depth of the beaks of parents is similar to the offspring. The mean of parents' beak depth will be 9mm, so the beak depth of the offspring will be approximately 9mm.

The depth of the beak does not depend on the sex of the parent. However, some points scatter close to the line of regression, which suggests that sex of the parent does not affect the beak depth of the offspring.

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Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

To determine: The expected beak depth of the offspring produced by the mating of males with beak depth of 10 mm and female with beak depth of 8 mm. The effect on the beak size of offspring if the female’s beak was 10 mm and male’s 6mm.

Introduction: The variety of processes can lead to evolutionary change in an organism. The English naturalist, Charles Darwin, proposed the Darwinian theory of biological evolution by natural selection, which is accepted by most of the evolutionary biologists.

Explanation of Solution

Darwin’s finches are an example of evolution by natural selection. Darwin observed that the species of the finches were closely related and similar to each other except for their beaks. Darwin also observed that the difference between the beak sizes had evolved the adaption of various species to use different food resources.

Some species of finches feed on small tender seeds, but due to depletion of these seeds, the birds resort to larger and hard seeds. The large seeds were consumed by the birds with shorter, more profound, and more powerful beaks and survived better, whereas when the plants bear an abundance of small seeds, the birds with long and shallow beaks survived better. The depth of the beaks of parents is similar to the offspring. The mean of parents' beak depth will be 9mm, so the beak depth of the offspring will be approximately 9mm.

The depth of the beak does not depend on the sex of the parent. However, some points scatter close to the line of regression, which suggests that sex of the parent does not affect the beak depth of the offspring.

Answer 8

Expert Solution & Answer

Summary Introduction

To determine: The expected beak depth of the offspring produced by the mating of males with beak depth of 10 mm and female with beak depth of 8 mm. The effect on the beak size of offspring if the female’s beak was 10 mm and male’s 6mm.

Introduction: The variety of processes can lead to evolutionary change in an organism. The English naturalist, Charles Darwin, proposed the Darwinian theory of biological evolution by natural selection, which is accepted by most of the evolutionary biologists.

Explanation of Solution

Darwin’s finches are an example of evolution by natural selection. Darwin observed that the species of the finches were closely related and similar to each other except for their beaks. Darwin also observed that the difference between the beak sizes had evolved the adaption of various species to use different food resources.

Some species of finches feed on small tender seeds, but due to depletion of these seeds, the birds resort to larger and hard seeds. The large seeds were consumed by the birds with shorter, more profound, and more powerful beaks and survived better, whereas when the plants bear an abundance of small seeds, the birds with long and shallow beaks survived better. The depth of the beaks of parents is similar to the offspring. The mean of parents' beak depth will be 9mm, so the beak depth of the offspring will be approximately 9mm.

The depth of the beak does not depend on the sex of the parent. However, some points scatter close to the line of regression, which suggests that sex of the parent does not affect the beak depth of the offspring.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

To determine: The expected beak depth of the offspring produced by the mating of males with beak depth of 10 mm and female with beak depth of 8 mm. The effect on the beak size of offspring if the female’s beak was 10 mm and male’s 6mm.

Introduction: The variety of processes can lead to evolutionary change in an organism. The English naturalist, Charles Darwin, proposed the Darwinian theory of biological evolution by natural selection, which is accepted by most of the evolutionary biologists.

Answer 12

Explanation of Solution

Darwin’s finches are an example of evolution by natural selection. Darwin observed that the species of the finches were closely related and similar to each other except for their beaks. Darwin also observed that the difference between the beak sizes had evolved the adaption of various species to use different food resources.

Some species of finches feed on small tender seeds, but due to depletion of these seeds, the birds resort to larger and hard seeds. The large seeds were consumed by the birds with shorter, more profound, and more powerful beaks and survived better, whereas when the plants bear an abundance of small seeds, the birds with long and shallow beaks survived better. The depth of the beaks of parents is similar to the offspring. The mean of parents' beak depth will be 9mm, so the beak depth of the offspring will be approximately 9mm.

The depth of the beak does not depend on the sex of the parent. However, some points scatter close to the line of regression, which suggests that sex of the parent does not affect the beak depth of the offspring.

Answer 13

Ch. 21.1 - Prob. 1LO Ch. 21.1 - Prob. 2LO Ch. 21.2 - Prob. 1LO Ch. 21.2 - Distinguish between demonstrating that evolution...Ch. 21.3 - Contrast the processes of artificial and natural...Ch. 21.3 - Prob. 2LO Ch. 21.4 - Prob. 1LO Ch. 21.4 - Prob. 2LO Ch. 21.4 - Prob. 3LO Ch. 21.5 - Explain the evolutionary significance of...

Suppose that a male with a beak depth of 10 mm mated with a female with a beak depth of 8 mm. What would the expected beak depth of the offspring be? Would it matter if the female’s beak was 10 mm and the male’s 6 mm?

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