The reason due to which a high number of proteins are expressed by a relatively lesser number of genes encoding for proteins in the genome of humans. Introduction: The human genome’s size is 3.2 billion base pairs, where it contains introns or noncoding genes, exons or coding genes and repetitive sequences. Human genes code for many proteins, which performs a functional and structural role in the body at the cellular and tissue level. The number of genes encoding for proteins is about 21,000, which is 0.1 percent of the human genome. However, the number of proteins is higher, which does not match the number of genes encoding for protein.

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The Snapdragon is a popular garden flower that comes in a variety of colours, including red, yellow, and orange. The genotypes and associated phenotypes for some of these flowers are as follows: aabb: yellow AABB, AABb, AaBb, and AaBB: red AAbb and Aabb: orange aaBB: yellow aaBb: ? Based on this information, what would the phenotype of a Snapdragon with the genotype aaBb be and why? Question 21 options: orange because A is epistatic to B yellow because A is epistatic to B red because B is epistatic to A orange because B is epistatic to A red because A is epistatic to B yellow because B is epistatic to A

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Question

Chapter 17.4, Problem 1R

Summary Introduction

To review:

The reason due to which a high number of proteins are expressed by a relatively lesser number of genes encoding for proteins in the genome of humans.

Introduction:

The human genome’s size is 3.2 billion base pairs, where it contains introns or noncoding genes, exons or coding genes and repetitive sequences. Human genes code for many proteins, which performs a functional and structural role in the body at the cellular and tissue level. The number of genes encoding for proteins is about 21,000, which is 0.1 percent of the human genome. However, the number of proteins is higher, which does not match the number of genes encoding for protein.

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The Snapdragon is a popular garden flower that comes in a variety of colours, including red, yellow, and orange. The genotypes and associated phenotypes for some of these flowers are as follows: aabb: yellow AABB, AABb, AaBb, and AaBB: red AAbb and Aabb: orange aaBB: yellow aaBb: ? Based on this information, what would the phenotype of a Snapdragon with the genotype aaBb be and why? Question 21 options: orange because A is epistatic to B yellow because A is epistatic to B red because B is epistatic to A orange because B is epistatic to A red because A is epistatic to B yellow because B is epistatic to A

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