PPT-Dihybrid crosses, sex linkage and multiple alleles

Patterns of inheritance Learning outcomes i genetic diagrams to show patterns of inheritance To include monogenic inheritance dihybrid inheritance multiple alleles sex linkage and codominance. What you should know:. The ‘etiquette’ used to represent genetic crosses.. Know what is, and how to represent a monohybrid cross.. Know what is, and how to represent a cross showing sex-linkage.. Genotype . vs. Phenotype. Genotype: An organism’s genetic makeup which consists of the alleles that an organism inherits from it’s parents (ex: . Ee. ,. EE, or . ee. ). Phenotype: The physical appearance of an organism’s genotype.. A) Alleles at different loci are independent. B) Alleles at different loci are physically close to each other and on the same chromosome. C) Alternate alleles at the same locus are not independent. D) Alleles at different loci are not independent. Heredity. The. passing of parents characteristics onto the offspring. Genetics is the branch of biology that studies heredity. Grego. r Mendel. Considered the father of genetics. Was an Austrian. monk that used pea plants to study heredity. What you should know:. The ‘etiquette’ used to represent genetic crosses.. Know what is, and how to represent a monohybrid cross.. Know what is, and how to represent a cross showing sex-linkage.. Crosses. Dihybrid. Cross . Is the crossing of two traits.. Instead of looking at probability of inheriting 1 traits, we are now going to analyze inheriting 2 traits.. Setting up the Parent Alleles. Dihybrid. Crosses. Probability and Genetics!. Why did Mendel use Pea Plants?. - easy to . control. pollination. Pea Flower. Stamens. (male). produce. pollen. Pistil. (female). produces. ovules. - seven distinct, inherited traits. Patterns of inheritance. Homework - Multiple Alleles: Hierarchy. Sometimes there are more than 3 alleles, occurring in a dominance hierarchy. Coat Colour in Rabbits. Agouti coat is dominant to Chinchilla coat, which is dominant to Himalayan coat, which is dominant to Albino coat. Mendel’s further experiments. Mendel’s . monohybrid crosses . were based on one characteristic controlled by one gene such as seed shape (round or wrinkled) in a pea plant. . He . then went on to ask: . Patterns of inheritance. Homework - Multiple Alleles: Hierarchy. Sometimes there are more than 3 alleles, occurring in a dominance hierarchy. Coat Colour in Rabbits. Agouti coat is dominant to Chinchilla coat, which is dominant to Himalayan coat, which is dominant to Albino coat. LinkageLinkage can be physical or statistical wefocus on physical - easier to understandBecause of recombination Mendel developslaw of independent assortmentBut loci do not always assort independently PBG 430. Linkage. Linkage is the non-random . association. of two or more phenotypes or sequences in a population (genes/sequences are (almost) always inherited together). Biological explanation for linkage: genes or sequences are closely located in the same chromosome. For either genotype orphenotype, the expected outcomes of a particular cross can be calculated by multiplying the probabilities of the individual outcomes. Crosses: Review For example, the ratios of  2017. Law of Independent Assortment. The inheritance patterns of one trait will not affect the inheritance patterns of another trait.. Independent assortment occurs during meiosis.. The . alleles for a trait separate when gametes are formed.