fairfolio
Saved Projects

A Link to the Future

CSEF · 2002 Biochemistry/ Molecular Biology

Jan M. Humphrey · Chipman Junior High School, Bakersfield

Overview

Objectives/Goals Given three linked loci, yellow body (y), a rough eye known as echinus (ec), and cut wings (ct), what is their frequency of recombination and thus the distance between them, and what is their sequence along the chromosome? Methods/Materials Drosophila melanogaster were used as experimental subjects. Test crosses were performed and the results were evaluated. Results The distances expressed in terms of percent of recombination have been determined as y - ec = 5.4, y - ct = 24.9, and ec - ct = 20.3. This shows that the sequence along the chromosome is y, ec, ct. Conclusions/Discussion The genes are arranged in a linear fashion along the chromosome and the frequency of recombination between them reflects their relative positions. The frequency of recombination can also be used as a measure of distance between the pairs of genes, and their linear distribution along the length of a chromosome can form the basis of a genetic map.

Summary statement

My project is about the frequency of recombination between specific gene loci in Drosophila melanogaster.

Help received

I received help from local high schools and college in specific problem areas.

Awards (1)

  • Category Award

Competition history

  • CSEF 2002 Biochemistry/ Molecular Biology · Entry J0402

Resources

Related projects

Closest projects by meaning, across every fair and year in the corpus.

Browse more like this

Source: California Science & Engineering Fair public projects

Save projects to your library

Sign in with Google to keep track of projects you find interesting, organized into folders. An account also raises your daily allowance for “Has this been done?”, and lets you create a key for the MCP server with a much higher limit than anonymous use. Browsing stays public.

Continue with Google