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Chromosome segment - PowerPoint PPT Presentation

Chapter 5 Human Chromosomes and Chromosome Behavior

Chapter 5 Human Chromosomes and Chromosome Behavior

Chapter 5 Human Chromosomes and Chromosome Behavior. Human Chromosomes. Humans contain 46 chromosomes, including 22 pairs of homologous autosomes and two sex chromosomes

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883 views • 43 slides
Human Karyotypes and Chromosome Behavior

Human Karyotypes and Chromosome Behavior

5. Human Karyotypes and Chromosome Behavior. Human Chromosomes. Humans contain 46 chromosomes, including 22 pairs of homologous chromosomes and two sex chromosomes

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628 views • 40 slides
Sex Linked Traits

Sex Linked Traits

Sex Linked Traits. Sex chromsomes: 1 pair. female = XX male = XY X chromosome: Y chromosome: larger, more genes male traits female traits distribution of body fat Color vision height genes Blood-clotting hair on ears Hair on head. Color Blindness: X- linked. normal. carrier.

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606 views • 39 slides
Variation in Structure of Chromosome

Variation in Structure of Chromosome

Variation in Structure of Chromosome. Chromosomal Aberrations. The somatic (2n) and gametic (n) chromosome numbers of a species ordinarily remain constant. This is due to the extremely precise mitotic and meiotic cell division.

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319 views • 28 slides
Chromosomes/DNA Mutations

Chromosomes/DNA Mutations

Chromosomes/DNA Mutations. Chromosome Mutation. Mutations are permanent gene or chromosome changes that will be passed on to offspring if they occur in a gamete Two categories of chromosome mutation-Those that affect the # of chromosomes and those that affect the structure of the chromosome.

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191 views • 18 slides
There are 3 number 21 chromosomes. This is called Trisomy 21

There are 3 number 21 chromosomes. This is called Trisomy 21

Analyze the karyotype:. There are 3 number 21 chromosomes. This is called Trisomy 21. (tri:3, somy:body). Down Syndrome. Chapter 13 - Meiosis and Sexual Life Cycles. AIM: What happens when meiosis goes wrong?. Chapter 13 - Meiosis and Sexual Life Cycles.

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1.57k views • 15 slides
CELL DIVISION

CELL DIVISION

Atypical or Abnormal Cell Division. CELL DIVISION. Mitosis Gone Awry. Mutations are changes in the molecular structure of DNA that ultimately creates diversity Carcinogens , radiation viruses and other factors can all cause mutations. http://www.youtube.com/watch?NR=1&v=Hm03rCUODqg.

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179 views • 9 slides
Types of mutations

Types of mutations

Types of mutations . Mutations are changes in the genetic material There are two basic types of mutations: Gene mutations - mutations that produce changes in a single gene Chromosomal mutations - mutations that produce changes in whole chromosomes. Gene mutations . Point mutations:

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4.85k views • 8 slides

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