Dihybrid cross: Difference between revisions
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==Mike's Dihybrid Cross== |
==Mike's Dihybrid Cross== |
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it's not mike hunt but I dont know how to properly edit it into mendel |
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Scientist [[Mike Hunt]] crossed pure breeding plants with round seeds and yellow albumen to pure breeding plants with wrinkled seeds and green albumen. The F<sub>1</sub> generation plants all had round seeds and yellow albumen and Mendel predicted that they would be heterozygous for both traits (RrYy). |
Scientist [[Mike Hunt]] crossed pure breeding plants with round seeds and yellow albumen to pure breeding plants with wrinkled seeds and green albumen. The F<sub>1</sub> generation plants all had round seeds and yellow albumen and Mendel predicted that they would be heterozygous for both traits (RrYy). |
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Revision as of 01:20, 11 March 2010
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A dihybrid cross is a cross between F1 offspring (first generation offspring) of two individuals that differ in two traits of particular interest. For example: RRyy/rrYY or RRYY/rryy parents result in F1 offspring that are heterozygous for both R and Y (RrYy).
A dihybrid cross is often used to test for dominant and recessive trits genes in two separate characteristics. Such a cross has a variety of uses in Mendelian genetics.
Meiosis (cell reduction) is the cellular process of gamete creation. It is where sperm and eggs get the unique set of genetic information that will be used in the development and growth of the offspring of the mating. The rules of meiosis, as they apply to the dihybrid, are codified in Mendel's First Law and Mendel's Second Law, which are also called the Law of Segregation and the Law of Independent Assortment, respectively.
For genes on separate chromosomes, each allele pair shows independent segregation. If the first filial generation (F1 generation) produces four offspring, the second filial generation, which occurs by crossing the members of the first filial generation, shows a phenotypic (appearance) ratio of 9:3:3:1.
Mike's Dihybrid Cross
it's not mike hunt but I dont know how to properly edit it into mendel
Scientist Mike Hunt crossed pure breeding plants with round seeds and yellow albumen to pure breeding plants with wrinkled seeds and green albumen. The F1 generation plants all had round seeds and yellow albumen and Mendel predicted that they would be heterozygous for both traits (RrYy).