What is the difference between genotype and phenotype?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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What is the difference between genotype and phenotype? In the ABO system in humans, there are three alleles, four phenotypes and six genotypes for blood type? How is this possible? How is it possible for someone to be of one sex genotypically, but the other sex phenotypically?
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Step 1(Introduction:Genotype)

Introduction

-Generally the term "Genotype" in biology refers to the genetic make-up of an organism.

-We can also define genotype as the sets of Genes in the DNA which determines the unique trait or the unique characteristics of an organism.

-In biology "gene" is considered as the segment of the DNA which encodes some traits.

-These genotypes which are responsible for the characters of the individual are inherited from the parents.

-Each specific genotype gives rise to a specific phenotypic or physical appearance or character.

 

 

Examples:

Some examples of genotype are

1 Eye color: Here the allele may produce brown or blue eye color and is inherited from the parents (Father/mother).

2 Height: Here the allele may give rise to two different physical characters as tall or short(It is also inherited from the offsprings).

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