Genetics Final Exam (Final exam for Pittcock Genetics ) What are deleterious genes and list one exa mple (ANS - alleles whose phenotype results in significantly reduced fitness of an animal; Dexter cattle - short legs Genetics (ANS - The scientific study of heredity and hereditary variation. Gregor Mendel is often referred to as (ANS - "Father of Genetics " What plant did Gregor Mendel study? (ANS - peas Why was Mendel more successful than other researchers? (what were they looking for or at differently) (ANS – 1. Picked easy organism to experiment 2. Picked plant that was diploid 3. Picked traits that were simply inherited 4. Mendel looked at traits separately Define genetic improvement and list 3 examples (ANS – The betterment of an organism; 1. bigger 2. smaller 3. faster 4. hairless 5. quicker weight gain Who created the term "genetics? '(ANS - William Batesone What is a chromosome? (ANS - a DNA molecule composed of RNA and proteins to form a threadlike structure; only visible during meiosis and mitosis (contains the genes) What is located on a chromosome? (ANS - genes What is the appearance of the structure of a DNA strand? (ANS - double helix Define DNA (ANS - Genetic material makes up a gene and then makes up a chromosome List the bases that make up DNA (ANS - Adenine Guanine Cytosine Thymin e What DNA bases are paired together? (ANS - Adenine - Thymine Cytosine - Guanine List one dominant trait and the corresponding recessive trait Cattle (ANS - Dominant - polled Recessive - horned List one dominant trait and the corresponding recessive trai t Chickens (ANS - Dominant - feathered shanks Recessive - clean shanks List one dominant trait and the corresponding recessive trait Horses (ANS - Dominant - smooth hair Recessive - curly hair List one dominant trait and the corresponding recessive trait Dogs (ANS - Dominant - wire hair Recessive - smooth hair List one dominant trait and the corresponding recessive trait Cats (ANS - Dominant - short hair
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Genetics Final Exam (Final exam for Pittcock Genetics)/Questions &Answers
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