Handout 7 (for students)

Handout 7 (for students) - Duyen-Anh Pham BICD 100...

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Unformatted text preview: Duyen-Anh Pham BICD 100 a4pham@ucsd.edu Key Terms : Chromosome vs. Chromatid vs. chromatin Centromere and Kinetochore Gametes - Gametes are reproductive cells (e.g sperm cells and egg cells). An egg cell is also called an ovum.- Gametes are haploid cells (n). The male and female gametes unite during fertilization to form a diploid (2n) zygote.- Cells that are not gametes are called Somatic cells. All somatic cells are diploid (2n).- E.g. human somatic cells contain 2 sets of chromosomes while gametes contain only 1 set of chromosome. (23 chromosomes in each set). - Meiosis produces gametes while mitosis produces somatic cells. Homologous Chromosomes (or Homologs)- Homologous chromosomes carry the same genes, but not necessarily the same alleles.- In a pair of homologous chromosomes, one chromosome is inherited from the mother and the other is inherited from the father. Synapsis and Tetrad- Synapsis is the process in which homologous chromosomes come together and line up side by side. Synapsis is the process in which homologous chromosomes come together and line up side by side....
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This note was uploaded on 02/28/2009 for the course BICD BICD100 taught by Professor Smith during the Winter '09 term at UCSD.

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Handout 7 (for students) - Duyen-Anh Pham BICD 100...

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