Biology > QUESTIONS & ANSWERS > ANSC 4395-Animal Breeding & Genetics Test 2 QUESTIONS WITH COMPLETE ANSWERS (All)
ANSC 4395-Animal Breeding & Genetics Test 2 QUESTIONS WITH COMPLETE ANSWERS
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Gregor Mendel: Correct Answer: -Augustinian priest and scientist -"Father of Genetics" -Mid 19th century -Performed breeding experiments with peas -Determined basic rules of inheritance ... by observing the outcomes of his matings Gene: Correct Answer: -Basic unit of inheritance -Segments of DNA -Relatively short segments of chromosomes Chromosomes: Correct Answer: -Long strands of DNA & associated proteins present in the nucleus of every cell -Present in pairs (one from the sire & one from the dam-# of pairs depends on the species) Homologs: Correct Answer: Pair of chromosomes having corresponding loci Locus: Correct Answer: The specific location of a gene on a chromosome At each locus, there is a pair of genes: Correct Answer: -One on the maternal chromosome and one on the paternal chromosome The genes at a locus are denoted by: Correct Answer: -A single letter or combination of letters and/or symbols -A locus = A and a (These are called alleles) If one letter of the gene at a locus is uppercase and the other lowercase, this implies... Correct Answer: a chemical and functional difference Allele: Correct Answer: An alternative form of a gene Although there are only two genes at any particular locus, the two may be part of a... Correct Answer: larger series of alternative forms of a gene (Multiple alleles) Multiple Alleles: Correct Answer: -More than two possible alleles at a locus -If there are 4 possible alleles, you may have: B b b' b" In dogs, the E locus affects coat color: Correct Answer: E - full extension of pigment E^br - brindling or tigerstriping e - inhibits pigment -Any dog can have a maximum of two of these color alleles in the E series [Show More]
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