Genetics Exam Notes Questions and Answers

What are chemical factors that determine traits called? - Answer- Genes What did Mendel conclude about how traits are inherited? - Answer- Passes on from parents to offspring What does the principle of dominance state? - Answer- That some alleles are dominant and others are recessive. What would the offspring of a true breeding tall plant and a true breeding short plant look like? - Answer- 100% Tall How are recessive alleles expressed? - Answer- Lowercase letters, ff A homozygous purple flower is crossed with a white flower. If the purple F1 flowers are allowed to self pollinate, what will their offspring look like? - Answer- 100% purple, 75% purple, 25% white In the P generation, a purple flower is crossed with a white flower. Explain how white flowers reappear in the F2 generation. - Answer- 2 recessive alleles join to form 2 hetero parents. How can the principles of probability be applied to genetics? - Answer- To predict the traits that are passed.