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Genetics: Class Notes 2- Traits and Chromosomes

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Presentation on theme: "Genetics: Class Notes 2- Traits and Chromosomes"— Presentation transcript:

1 Genetics: Class Notes 2- Traits and Chromosomes

2 I. Where do my traits come from?
From your parents More specifically, from the chromosomes your parents gave you.

3 II. Chromosomes in detail
Chromosomes are made of _______. Each chromosome contains many genes.

4 C. Each chromosome has a partner (homologous chromosome) that contains the same type of genes. D. One chromosome is from your mother, and one is from your father.

5 III. Chromosome quantities
A.Organisms of the same species have the same number of chromosomes: humans=46: 23 pairs goldfish=94: 47 pairs fruit flies=8: 4 pairs

6 IV. What are the two types of cells?
Body cells have 2 sets of chromosomes = diploid cells Reproductive cells (sperm & egg) have one set. These are called gametes =haploid cells

7 V. How are these cells formed?
New body cells are exactly the same as the original and are formed through a process called __________. Gametes have HALF the chromosomes as the original and are formed through a process called meiosis.

8 Summary What are the two processes that make new cells?
What type of cell does each process make?


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