Genetics: Learning Goals 1­4 Quick Quiz (Answers) 1) If a line of plants self pollinate for long enough, that line will become genetically uniform, or ....? * ○ Pure ○ Purebred ○ Organized ○ Identical 2) If a purebred plant self pollinates, its offspring will ..... * ○ Share all of its characteristics. ○ Share some of its characteristics. ○ Share none of its characteristics. 3) Mendel selected Pea Plants to perform his experiments because of which of the following reason(s)? * Check all that apply ○ They reproduced quickly ○ He could eat them after ○ He could easily control them ○ They had clear traits that allowed him to distinguish from one another ○ He had a lot of them around his house 4) How many Pea Plant Traits did Mendel choose to observe? * ○ 4 ○ 5 ○ 6 ○ 7 5) What did Mendel do before making his conclusion? * ○ He crossed 2 pea plants, one with white flowers and one with purple flowers and recorded his observations ○ He crossed many purebred pea plants by hand for each trait and recorded his observations ○ He planted tons of pea plants in a field and recorded his observations over 10 years ○ He crossed several pea plants by hand and made guesses as to which traits he would see in their offspring 6) Mendel made 3 conclusions (2 of which were part of his Law of Segregation). What was his first conclusion not including the Law of Segregation.? * ○ Traits are inherited and can always be visible to the naked eye. ○ Traits are mixed together if the parents do not express the same form of a trait. ○ Traits are inherited as discrete units, which provided an explanation for individual traits that persisted without being blended or diluted. ○ Traits could be expressed in only 2 ways. No more, no less. 7) What were the two parts of Mendel's Law of Segregation? * Check all that apply ○ Organisms donate only one copy of each gene in their gametes. Thus, the two copies of each gene segregate, or separate, during gamete formation. ○ Organisms donate all of their genetic makeup to their offspring. Whether it is visible or not is another matter. ○ Organisms are a perfect blend of both their parents. ○ Organisms inherit two copies of each gene, one from each parent. 8) Please select the correct order of generations via the Indicators that Mendel developed. * >=Arrow pointing right ○ F1>F2>P ○ P1>F2>F1 ○ P1>P2>F1 ○ P1>F1>F2 9) Allele * Select the correct definition ○ Location of a particular gene in your DNA ○ When two strands of DNA are different ○ The same thing as a gene ○ Any of the alternative forms of a gene that may occur at a specific locus 10) Heterozygous * Select the correct definition ○ Factors that control traits ○ Same alleles ○ Different alleles ○ Genetic Makeup 11) Genotype * Select the correct definition ○ The way the organism behaves or looks ○ Genetic Makeup ○ Factors that control traits ○ Crossing with 2 traits 12) Phenotype * Select the correct definition ○ Factors that control traits ○ Uniting of the male and female gametes ○ The way the organism behaves or looks ○ Genetic Makeup 13) Homozygous * Select the correct definition ○ Crossing with 2 traits ○ Genetic Makeup ○ Same alleles ○ Different alleles 14) Dominant Allele * Select the correct definition ○ Both alleles (factors) for a trait are the same and dominant (AA) ○ Genetic trait that is represented with a capital letter and will always show if it is present. ○ The study of heredity or how those traits are inherited ○ Uniting of the male and female gametes 15) Recessive Allele * Select the correct definition ○ Genetic trait that is represented with a capital letter and will always show if it is present. 1 ○ Both alleles (factors) for a trait are the same and recessive (aa) ○ The study of heredity or how those traits are inherited ○ A trait that is masked by the dominant trait. Only apparent when two recessive alleles for the same characteristic are inherited.