PDF-Genes and Alleles

7222009 t housands of different g enes and g typically have two copies of every The two copies or alleles of the gene may or may not be identical and one may be dominant in determining the phen. Traits, Genes, and Alleles. 1. Objectives. SWBAT explain how there can be many versions of one gene.. SWBAT describe how genes influence the development of traits.. 2. Vocabulary. Gene . Allele. Homozygous . Heredity. CH12 . pg. 267. Sexual Reproduction. Combining of a sperm cell and an egg cell from two individuals . The offspring of this "cross" will have characteristics from both "parents“. hybrid. In a population, there may be more than two alleles for a given trait. If a gene exists in more than two alleles, it is said to have . multiple alleles. Coat colour in rabbits. E.g. Coat colour in rabbit controlled by 3 alleles. The Color of Skin. Like most human traits, skin color has a genetic basis; more than 100 gene products affect the synthesis and deposition of melanins. Mendel’s Experimental Approach. Mendel was a monk with training in plant breeding and mathematics. Lab 11. The Family. The Principles of Mendel. Experiments in Plant Hybridization” – scientific paper written in 1866 by . Gregor. Mendel. Went unnoticed until closer to 1900 –. Mendel’s findings: Foundation of . Punnett. Squares and to discuss independent assortment and different types of dominances. . 11.3. Independent assortment. Do alleles get passed together to the next generation?. 2 Factor Cross. (RRYY x . Genetic Crosses. Gregor Mendal. is known as the father of genetics!!!. General Definitions. . Genetics:. is the study of inheritance.. . Somatic Cells:. . are all cells . except. sex cells . e.g. Cheek, liver, muscle, blood, leaf, stem . MENDEL. ’. S PRINCIPLES. Alternate version of genes (. alleles. ) cause variations in inherited characteristics among offspring.. For each character, every organism inherits one allele from each parent.. and. DNA & RNA. What is . Genetics. ?. Genetics. - The study of heredity. Genes. - set of characteristics inherited from your . parents. Found on chromosomes and contain DNA. Recent discoveries on how characteristics are passed from generation to . . . . inheritance . Parents pass . . to their offspring. . genes. What does letter A represent?. Chromosome. A. B. C. What does letter B represent?. DNA. A. B. C. What does letter C represent?. . Heredity:. The passing of genetic traits . from parent to offspring.. The scientific study of heredity is known as: . genetics. . The History. :. Until the nineteenth century the explanation for why offspring resemble their parents was the blending inheritance model.. , . M.V.Sc. ., Ph.D.. Assistant Professor. Dept of . Animal Genetics and Breeding. Bihar Animal Sciences University, Patna (Bihar). Basic Concept on Genetics . of . Dairy . P. roduction. What is genetics?. Review 8. Important Vocabulary. Gene – piece of a chromosome that codes for a trait. Trait – a specific characteristic that varies from one individual to another. You are your parents!. Dad’s chromosomes. Record #6. SRA Science Reading Laboratory, 2nd Quarter Selections . Record #7. SLI Activity 57: Copycat. Record #8. Guided Notes for . Protists. Four . ppt. (revisited). Record #9. Act. 57 Copycat (Reproduction) .