Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Ridge (biology) wikipedia , lookup
Gene regulatory network wikipedia , lookup
Molecular evolution wikipedia , lookup
Genomic imprinting wikipedia , lookup
Genome evolution wikipedia , lookup
Community fingerprinting wikipedia , lookup
Artificial gene synthesis wikipedia , lookup
Exploring Genetics You can use a Punnett square to show the combinations possible for 2 gene traits: Do genes segregate independantly, or are traits linked in some way? Round Yellow Peas (RRYY) Mendel conducted an experiment in which he crossed a true breeding plant with round and yellow peas with a true breeding wrinkled green pea plant. (RRYY) x (rryy) RY RY RY RY ry RrYy RrYy RrYy RrYy ry RrYy RrYy RrYy RrYy ry RrYy RrYy RrYy RrYy ry RrYy RrYy RrYy RrYy Wrinkled Green peas (rryy) The F 1 generation produced all plants with round, yellow peas (the dominant characteristics). Oct 181:34 PM Oct 181:41 PM Summarize your results using the following table: To determine whether or not these genes segregated indepensantly, he allowed the plants to selfpollinate and create an F Use a Punnett square to predict the F 2 generation. Number 2 offspring traits: Round Yellow peas: Heterozygous Round Yellow Peas (RrYy) RY Heterozygous Round yellow peas (RrYy) Ry rY ry RrYy Ry RRYy RRyy RrYy Rryy rY RrYY RrYy rrYY rrYy ry Rryy rrYy Rryy ~19% 3 ~19% wrinkled yellow peas: 1 ~6% Figure 11 10, p. 271 Oct 181:48 PM Since some of the F 2 offspring does not look like wither parent, Mendel was able to conclude that genes segregate independently. A monohybrid cross for a single gene. ( Just because you get one gene, doesn't mean you'll automatically ) get the other one as well. independant assortment ~56% Round green peas: Oct 181:39 PM This principle is known as 9 Wrinkled yellow peas: 3 RY RRYY RRYy RrYY RrYy Percentage is a cross between two heterozygous organisms ex: Heterozygous tall pea plants (Tt x Tt) . A dihybrid cross two genes. is a cross between two heterozygous organisms for ex: Heterozygous round yellow peas (RrYy x RrYy) Oct 181:57 PM Oct 182:09 PM 1 The rules of genetics we have seen so far do not account for the diversity of traits in all organisms. In some cases, alleles are neither dominant or recessive. Use your TB to create a working defenition of the following genetic concepts: Incomplete dominance Codominance Multiple alleles Polygenic traits Use pages 272 274 to complete this work. Oct 181:53 PM Oct 182:18 PM Do an inheritance lab (see file!) http://www.phschool.com/webcodes10/index.cfm?wcprefix=cbp&wcsuffix=4112 &fuseaction=home.gotoWebCode&x=0&y=0 Oct 182:09 PM 2