PPT-Dihybrid

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. 8.2. Monohybrid Crosses. Looking at one characteristic. Shows what the offspring genotypes could be. This first generation is known as . F. 1. Crossing this first generation for the second generation would be known as . 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.. 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.. f. h. f. H. Fh. FH. 1. In . werewolves, sharp fangs are dominant (F) and round fangs are recessive (f). Long hair is dominant (H) and short hair is recessive (h). Cross a heterozygous sharp fanged, hybrid long haired werewolf with a hybrid sharp fanged, heterozygous long haired werewolf. Give the genotypic and phenotypic percentage and ratios of the F. B=black. b=chestnut. T=Trotting. t=pacing. P: BBtt x bbTT. **FOIL. Bt Bt Bt Bt. bT bT bT bT. F. 1. :. bT. Bt. BbTt. 100% black, trotting. heterozygous dominant. F. 2. :. BbTt x BbTt. 10.2 . Inheritance. Understanding. :. Unlinked genes segregate independently as a result of meiosis. Segregation. = separation of the 2 alleles of a gene during meiosis. Independent assortment . = alleles of one gene segregate independently of the alleles of other genes (due to . 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. 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.. Unattached earlobes (E) is dominant to attached earlobes (e). Widow’s peak (H) is dominant to a straight hairline (h). If a male who is heterozygous for both traits marries a female who is homozygous recessive for earlobes and homozygous dominant for hairline, answer the questions. . 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: . GENETIC VOCABULARY. Gene- A specific characteristic of an organisms. (A segment of DNA). Genetics- Branch of biology that focuses on heredity.. Allele- Different versions of a gene. Ex. B or b. Dominant- The expressed form of a trait, which will completely cover the recessive trait. Ex B. Multiple Traits. Why Study Heredity?. To determine inheritance patterns. Trace lineage of traits or diseases. Selective breeding. Genetically modified foods. Dihybrid. Crosses. A How-to. Dihybrid. Complete a Punnett Square for these crosses:. In seals, the gene for the length of the whiskers has two alleles. The dominant allele (L) codes long whiskers and the recessive allele (l) codes for short whiskers. A heterozygous and a homozygous recessive seal are crossed..  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.