'Patau syndrome' diaporamas de présentation

Ch7. Chromosome Mutation Variation in Number and Arrangement

Ch7. Chromosome Mutation Variation in Number and Arrangement. Although most members of diploid species normally contain precisely two haploid chromosome sets, many known cases vary from this pattern.

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Mutations

Mutations. Year 13. Mutations. A mutation is a permanent genetic mistake in a gene or a chromosome. Mutations can occur spontaneously or be induced. Spontaneous mutations arise from errors in replication. Induced mutations are caused by mutagens.

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Mutagenesis (mutations) and Teratogenesis (congenital malformations)

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Mutagenesis (mutations) and Teratogenesis (congenital malformations)

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Mendelian Inheritance Part 2

Mendelian Inheritance Part 2. BIO 2215 Oklahoma City Community College. Dennis Anderson. Multiple Alleles. More than two forms of an allele exist in a population An individual only has two of the alleles. Multiple Blood Alleles. A allele for making the A antigen on red blood cells.

550 views • 45 slides

Chromosomes

Chromosomes. Packaged Instructions for Life. Structure. Chromosomes are packages of DNA wrapped with help of proteins called histones Composed of two identical sister chromatids attached at centromere.

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Karyotype Curiosities

Karyotype Curiosities. Visual Aids. Fertilization. MITOSIS. egg n=23 haploid. Sperm n=23 haploid. Zygote n=46 diploid. Stem Cells Diploid=2n. 2n. 2n. 2n. 2n. 2n. 2n. 2n. 2n. 2n. 2n. The fusion of a sperm and egg to form a zygote.

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Extra credit problem for Lecture #4

Extra credit problem for Lecture #4. An agouti mouse is crossed to a white mouse and all the F1 offspring are agouti. An F1 female is crossed to an F1 male, and the offspring are: 11 agouti: 5 white: 4 black

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KARYOTYPE AND GENETIC DISORDERS

KARYOTYPE AND GENETIC DISORDERS. H. Biology. Chromosomes Determine Your Gender. Humans have 23 pairs of chromosomes 22 pairs are autosomes (chromosomes that are NOT involved in making gender) Also called homologous chromosome pairs

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Chapter 6

Chapter 6. Autosomal Trisomy Conditions. Terms to know. Chromosome mutation/aberration Change in the total number of chromosomes Rearrangement of genetic material within or among chromosomes Gene mutation Addition, deletion, or rearrangement of individual genes Aneuploidy

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Karyotype

Karyotype. A chart of chromosome pairs arranged by length and location of the centromere. How are karyotypes made?. Somatic cells (remember these are body cells) in metaphase are grown and then dropped onto a slide bursting the nucleus.

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Unit 4, Day 4

Unit 4, Day 4. Genetics & Human Development Thu, Jan 24 th (Block, 115 min) Fri, Jan 25 th (Block, 85 min). Homework Due Today (0 min) - Stamp. Human Development YouTube Video Notes & Problems (Page 37.F) Egg. Daily Question. Page 37.A

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Nondisjunction Mutations

Nondisjunction Mutations. Chapter 12. Nondisjunction ("not coming apart") is the failure of chromosome pairs to separate properly during cell division.

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CHROMOSOMAL Syndromes

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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

384 views • 12 slides

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

374 views • 12 slides

Patau Syndrome

Patau Syndrome. A picture demonstrating polydactyly, or extra fingers, a common abnormality in Patau syndrome. Cayden Phipps 3A- Abrams. Description. Patau syndrome - also known as trisomy 13 and trisomy D. Affects about 1 in 12,000 live births.

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Non- disjuction errors in Autosomal chromosomes

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Down Syndrome ( trisomy 21)

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Karyotype

Karyotype. Investigating Chromosomal Abnormalities. Karyotype. Mitosis is stopped at metaphase Cells are stained with chemicals that reveal banding patterns in the chromosomes Geneticists match up chromosome pairs to identify abnormalities. Chromosomal Abnormalities.

449 views • 7 slides