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INTRODUCTION TO GENETICS. INTRO TO GENETICS FERTILIZATION: male & female reproductive cells join & produce a new cell which develops into an embryo (inside.

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Presentation on theme: "INTRODUCTION TO GENETICS. INTRO TO GENETICS FERTILIZATION: male & female reproductive cells join & produce a new cell which develops into an embryo (inside."— Presentation transcript:

1 INTRODUCTION TO GENETICS

2 INTRO TO GENETICS FERTILIZATION: male & female reproductive cells join & produce a new cell which develops into an embryo (inside the seed)

3 INTRO TO GENETICS TRUE-BREEDING: Because pea plants are self-pollinating, they produce offspring identical to themselves Pg. 264 shows examples of traits

4 INTRO TO GENETICS TRAITS: specific characteristics like seed color or plant height

5 INTRO TO GENETICS CROSS-POLLINATION: Mendel wanted to see what would happen if he Prevented self-fertilization & instead joined male & female reproductive cells from 2 different plants

6 INTRO TO GENETICS PARENTAL GENERATION (P) FIRST FILAL OFFSPRING (F 1 ) filal = son or daughter

7 INTRO TO GENETICS HYBRIDS: offspring resulting from crosses between parents of different traits

8 INTRO TO GENTICS Mendel’s 2 Conclusions: 1) Biological inheritance is determined by factors that are passed from one generation to the next…called GENES ALLELES: different forms of a gene EX: tall size or short size

9 INTRO TO GENETICS Mendel’s 2 Conclusions: 2) PRINCIPLE OF DOMINANCE: some alleles are dominant and Some are recessive

10 INTRO TO GENETICS SEGREGATION: separation of alleles during formation of sex cells GAMETES: sex cells

11 INTRO TO GENETICS HETEROZYGOUS: 2 different alleles for the same trait EX: Tt HOMOZYGOUS: 2 identical alleles for a trait EX: TT or tt


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