'Human karyotype' diaporamas de présentation

Banding: Different extents of chromatin condensation

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CELL STRUCTURE AND FUNCTION

CELL STRUCTURE AND FUNCTION. Despite the diversity among cells, three basic features are common to all cell types. All cells have outer boundary, an interior substance and a control region. CELL STRUCTURES. Composition: phospholipid bilayer with embedded proteins. Function:

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Lesson 128

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Human Heredity

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Chromosomes vs. Chromatin

Chromosomes vs. Chromatin. Chromosomes Tightly packaged DNA Found only during cell division DNA is not being used for macromolecule synthesis. Chromatin Unwound DNA Found throughout Interphase DNA is being used for macromolecule synthesis. Gene Representations. Gene Representations.

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The Human Genome

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Karyotypes

Karyotypes. X Y. Several methods help map human chromosomes. A karyotype is a picture of all chromosomes in a cell. Human Karyotype. To analyze chromosomes, cells are photographed during mitosis when chromosomes are fully condensed and easy to see.

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Human Chromosome Disorders

Human Chromosome Disorders. PLEASE be respectful of the afflicted people shown in this powerpoint . . One little mistake in meiosis and this could have been YOU!. DEFINITIONS. KARYOTYPE: a picture of the chromosomes. http://learn.genetics.utah.edu/content/begin/traits/karyotype/.

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Genetics Review

Genetics Review. Honors Human Anatomy & Physiology Mr. Mazza 2009-10. Why review genetics in a course on anatomy & physiology?. Genes control the layout, make-up and function of the bodies of all organisms. Examples of traits influenced by genes : Appearance (hair, skin, eyes, height, etc.)

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Mistakes in Meiosis

Mistakes in Meiosis. Nondisjunction. The failure of homologous chromosomes to separate properly during meiosis. What should happen. Nondisjunction. The results. If the abnormal gametes is fertilized the results. Polyploidy. the condition where cells have multiple sets of chromosomes

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Chromosomal Basis of Inheritance

Chromosomal Basis of Inheritance. Tracing Heredity through Inheritance of Specific Chromosomes. Sex Determination. Sex Chromosomes : homologous chromosomes that differ in size and genetic composition between males and females. Sex Determination.

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Chromosomes

Chromosomes A lot of information in a very small package! Prokaryotes vs. Eukaryotes PROKARYOTES have very scattered DNA in their cells. EUKARYOTES keep their DNA in the nucleus and will produce chromosomes. DNA Size Human DNA:

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Levels of DNA Packing

Levels of DNA Packing. Human Karyotype. ?. Trisomy 21. Binary Fission. Mitosis. Mitosis. Mitosis in Onion Root Tip. Onion Root Tip. Prophase (black) Metaphase (green) Anaphase (blue) Telophase (red) Others are in interphase. Bar = 50 Microns. Mitosis vs. Meiosis.

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Chapter 27 Human Genetics

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Chapter 27 Human Genetics

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