(7 th ) Chapter 5-1 Cornell Notes Mendel’s Work. Chapter 5-1: Key Questions What were the results of Mendel’s experiments, or crosses? Answer 1: ______________________________________________.

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(7 th ) Chapter 5-1 Cornell Notes Mendel’s Work

Chapter 5-1: Key Questions What were the results of Mendel’s experiments, or crosses? Answer 1: ______________________________________________ What controls the inheritance of traits in organisms? Answer 1: ______________________________________________

Chapter 5-1: Key Terms heredity- trait- genetics- fertilization- purebred-

Chapter 5-1: Key Terms gene- alleles- dominant allele- recessive allele- hybrid-

Chapter 5-1 Paragraph 1 heredity: passing of traits from parents to children; Genetics: the science to study heredity.

Chapter 5-1 Question: Which parent has the more dominant traits? 1. Father 2. Mother 3. Neither

Chapter 5-1 Paragraph 2 fertilization (new organism) = egg + sperm; self-fertilization: both male + female parts in same flower; pistil: female part; stamen: male part.

Chapter 5-1 Problem: Which of the following illustrates self- pollination? 1. The same plant. 2. Two plants that are next to each other. 3. Plants that aren’t male or female.

Chapter 5-1 Paragraph 3 purebred: same trait many generations; F1 dominant trait always shows; F2 ¾ dominant trait; ¼ recessive trait; genes: factors that controls traits; alleles: factors of a gene (2).

Chapter 5-1 Summary: What percent of the F2 generation would show the dominant trait if both parents have a dominant and a recessive allele for the same trait? 1. 25%.2. 50%3. 75%

Chapter 5-1 Paragraph 4 Alleles two types: dominant, recessive; dominant always expressed; recessive hidden by dominant; recessive only appears if dominant allele absent..

Chapter 5-1 Participation: Please turn to your partner and explain the difference between a dominant allele and a recessive allele.

Chapter 5-1 Paragraph 5 Mendel’s cross: 1 purebred tall X 1 purebred short, (TT X tt); F1 generation all hybrids (Tt). Gregor Mendel: “Father of Genetics”

Chapter 5-1 Speculation: What offspring would you get if you had 2 purebred parents?