Investigating the frequencies of gene and genotype in the human population

Type :

Term papers

Pages :

21 pages

Format :

.doc

Published date :

04/23/2009

Category :

Science & technology

Sub category :

Biology

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Summary :

Introduction
1. Mendelian traits
2. Population genetics
3. Hardy Weinberg equilibrium
4. Testing of hypothesis
Aim and objective
Methodology
1. Data sampling techniques
2. Data collection techniques
3. Photos
4. Data sheets
Data analysis and calculation
Result analysis and statistical validation
Discussion and conclusion
Glossary
Bibliography

Abstract

Mendelian genetics is built on the work done by the "father of genetics", Gregor Johann Mendel (1822-1884). His contributions to the study of inheritance paved the way for our basic understanding of how traits are inherited from one generation to the next. He was also instrumental in applying statistical analysis to his experiments. Because of this he was able to predict outcomes of various genetic crosses and then test those predictions against actual crosses. A Mendelian trait is one that is controlled by a single locus and shows a simple Mendelian inheritance pattern. In such cases, a mutation in a single gene can cause a disease that is inherited according to Mendel's laws. The Mendelian Inheritance in Man database is a catalog of, among other things, genes in which Mendelian mutant's causes disease. The nature of hair on the scalp is governed by a set of genes that are responsible for the structure of certain proteins. The secondary structure of hair protein (keratin) is helical while the tertiary structure varies. The kinks and bends in the secondary structure cause the curls in hair. Curly hair has more kinks and bends than wavy and straight hair has very few, if any bends. It is claimed that curly hair is autosomal dominant to straight hair while heterozygote show intermediate wavy hair. The tongue is muscular organ and its flexibility varies genetically. The people who can role the tongue into a U or V shaped trough are rollers while the others are non-rollers. The roller phenotype is autosomal dominant. In males an association with the ability to move the ears was found.