Why calico cats are almost female. Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

Question

The shape of radishes may be long (SL/SL), oval (SL/SS), or round (SS/SS), and the color of radishes may be red (CR/CR), purple (CR/CW) or white (CW/CW). If a long, red radish plant is crossed with a round, white plant, what will be the appearance of the F1 and F2 generations?

Answer 1

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Chapter 10, Problem 3CT

A.

Summary Introduction

To determine: Why calico cats are almost female.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

B.

Summary Introduction

To determine: Why the calico cats are rare and sterile.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

C.

Summary Introduction

To propose: A mechanism that would give rise to the white fur.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

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The shape of radishes may be long (SL/SL), oval (SL/SS), or round (SS/SS), and the color of radishes may be red (CR/CR), purple (CR/CW) or white (CW/CW). If a long, red radish plant is crossed with a round, white plant, what will be the appearance of the F1 and F2 generations?

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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…

Answer 2

Question

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Chapter 10, Problem 3CT

A.

Summary Introduction

To determine: Why calico cats are almost female.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

B.

Summary Introduction

To determine: Why the calico cats are rare and sterile.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

C.

Summary Introduction

To propose: A mechanism that would give rise to the white fur.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

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Answer 3

Question

100%

Chapter 10, Problem 3CT

A.

Summary Introduction

To determine: Why calico cats are almost female.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

B.

Summary Introduction

To determine: Why the calico cats are rare and sterile.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

C.

Summary Introduction

To propose: A mechanism that would give rise to the white fur.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

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Answer 4

Question

100%

Chapter 10, Problem 3CT

A.

Summary Introduction

To determine: Why calico cats are almost female.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

B.

Summary Introduction

To determine: Why the calico cats are rare and sterile.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

C.

Summary Introduction

To propose: A mechanism that would give rise to the white fur.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

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Answer 5

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Answer 6

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Answer 7

Chapter 10, Problem 3CT

A.

Summary Introduction

To determine: Why calico cats are almost female.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

B.

Summary Introduction

To determine: Why the calico cats are rare and sterile.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

C.

Summary Introduction

To propose: A mechanism that would give rise to the white fur.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

Answer 8

Chapter 10, Problem 3CT

A.

Summary Introduction

To determine: Why calico cats are almost female.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

Answer 9

Chapter 10, Problem 3CT

A.

Summary Introduction

To determine: Why calico cats are almost female.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

Answer 10

B.

Summary Introduction

To determine: Why the calico cats are rare and sterile.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

Answer 11

B.

Summary Introduction

To determine: Why the calico cats are rare and sterile.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

Answer 12

C.

Summary Introduction

To propose: A mechanism that would give rise to the white fur.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

Answer 13

C.

Summary Introduction

To propose: A mechanism that would give rise to the white fur.

Concept introduction: Some of the cats are white with patches of two colors (usually black and orange). Such cats are called as calico cats. The coat colors in them are determined and are associated with the X chromosomes. Most of the calico cats are females. One of their color coats is determined by the maternal X chromosome and the other with the paternal X chromosome. Males are rare as they have only one sex chromosome and mostly the males are often sterile.

Answer 14

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