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HomeHomework HelpgeneticsGenetic Mapping

Genetic Mapping

Genetic mapping refers to the process of determining the relative positions of genes on a chromosome based on the frequency of recombination events during meiosis. Recombination frequency is the proportion of offspring that exhibit new combinations of traits, reflecting the physical distance between genes; closer genes have lower recombination frequencies, while genes that are farther apart have higher frequencies.

intermediate
3 hours
Genetics
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Overview

Genetic mapping is a crucial technique in genetics that helps scientists understand the arrangement of genes on chromosomes. By measuring recombination frequency, researchers can create linkage maps that illustrate the distances between genes, which is essential for studying inheritance patterns and...

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Key Terms

Recombination
The process by which genetic material is physically mixed during meiosis.

Example: Recombination leads to genetic diversity in offspring.

Linkage Map
A diagram that shows the relative positions of genes on a chromosome.

Example: Linkage maps help breeders select desirable traits.

Genetic Marker
A specific DNA sequence that can be used to identify a particular gene.

Example: SNPs are common genetic markers used in mapping.

Chromosome
A structure made of DNA and proteins that carries genetic information.

Example: Humans have 23 pairs of chromosomes.

Meiosis
A type of cell division that reduces the chromosome number by half, producing gametes.

Example: Meiosis is essential for sexual reproduction.

Homozygous
Having two identical alleles for a particular gene.

Example: A plant can be homozygous for flower color.

Related Topics

Molecular Genetics
Study of the structure and function of genes at a molecular level.
advanced
Population Genetics
Explores genetic variation within populations and how it changes over time.
intermediate
Quantitative Genetics
Focuses on the genetic basis of complex traits that are influenced by multiple genes.
advanced

Key Concepts

Recombination FrequencyLinkage MapsGenetic MarkersChromosome Mapping