* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Punnet Square Guided Notes
Survey
Document related concepts
Public health genomics wikipedia , lookup
Biology and consumer behaviour wikipedia , lookup
Population genetics wikipedia , lookup
Hardy–Weinberg principle wikipedia , lookup
Designer baby wikipedia , lookup
Heritability of IQ wikipedia , lookup
Behavioural genetics wikipedia , lookup
Genetically modified crops wikipedia , lookup
Medical genetics wikipedia , lookup
Microevolution wikipedia , lookup
History of genetic engineering wikipedia , lookup
Transcript
Genetics The Blending Hypothesis A Trait _______________________________________________________ such as tall and short In the early 1800’s many biologists believed in the Blending Hypothesis __________________________________________________________________________ Genetics – ____________________________________________________ The Father of Genetics- Gregor Mendel Gregor Mendel (1822-1884) Austrian Monk Pea Plant Experiments Mendel studied _____________________________________ or “factors” from one generation to the next These factors are now called genes Genes - ____________________________________________________________________ Mendel’s Breeding Experiments Mendel bred plants for years to ensure that they were true-breeding True-breeding - means that offspring always ______________________________________ Mendel Cross-fertilized all his pea plants by hand to control which traits he wanted to test Mendel expected ___________________________ IE: Tall pea x Short pea resulting in Medium height plants Some Mendelian Conclusions Mendel and Alleles: Different forms of a gene are called _________________ We use _________________ to represent Alleles Law of segregation: When gametes are made the alleles for a trait separate, so each gamete carries only one allele for each trait Law of dominance: ______________________________________________________ ______________________________________________________ Genetics Punnett Squares Punnett Squares are tools used to determine _______________________________________ from a genetic cross Sample Problem Homozygous – An individual that has ____________________ ___________________________________________________ Let’s say you are Mendel. You take a pure-breeding pea plant that is tall (TT) and you combine it with a pure-breeding pea plant that is short (tt). What would their possible offspring be? Which of the plants in the sample are homozygous? Heterozygous – An individual that has ___________________ ___________________________________________________ Which of the plants in the sample are heterozygous? Dominant – _________________________________ ___________________________________________ Recessive – _________________________________ ___________________________________________ If an individual is Homozygous Dominant _________ ___________________________________________ If an individual is Heterozygous _________________ ___________________________________________ Example: TT = tall Example: Tt = tall If an individual is Homozygous Recessive _________ ___________________________________________ Example: tt = short TT tt Tt