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Banding: Different extents of chromatin condensation.

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Presentation on theme: "Banding: Different extents of chromatin condensation."— Presentation transcript:

1 Banding: Different extents of chromatin condensation

2 Allele names according to phenotype Wild type amorph hypomorph hypermorph R R R R neomorph R~R~ R~R~ R~R~ R~R~ NULL

3 Standard Dominant – Recessive Haploinsufficiency

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5 Lyse Cell and its Nucleus  Human Karyotype – Trisomy 21

6 disjunction non- הפרדת – כרומ. הפרדה אי - junction חיבור אי - הפרדה

7 Non-disjunction in Meiosis I: Animation 18.1a

8 Non-disjunction in Meiosis II: Animation 18.1b

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10 Down Patau Edwards

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13 Animation 17.2b

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16 Monosomy: Karyotype minus 1 chromosome homolog חסר עותק ( הומולוג ) אחד של כרומוזום Nullisomy: Karyotype minus both chromosome’s homologs שני העותקים ( הומולוגים ) של כרומוזום אחד חסרים

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19 X Y X Y X+Y X+X Y Y An example: In males

20 X1X1 X2X2 X1+X2X1+X2 X1+X2X1+X2 X 1 + X 1 An example: In females X1X1 X2X2 X2X2 X2X2

21 XXY - Kleinfeldter

22 XO - Turner

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30 Sex-linked anhidrotic ectodermal dysplasia (absence of sweat glands in blue areas)

31 XXX, XXY, XXYY

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45 2n 4n

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49 כרוב צנון

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54 Nullisomics of modern (hexaploid) wheat

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