'Called sex linked traits' diaporamas de présentation

Chapter 7: Genes and Inheritance

Chapter 7: Genes and Inheritance. Family resemblance: how traits are inherited. Lectures by Mark Manteuffel, St. Louis Community College. Take-home message 7.1. Offspring resemble their parents because they inherit genes from their parents.

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Patterns of Heredity

Patterns of Heredity. Not. ______ all traits are simply inherited by dominant and recessive alleles (Mendelian Genetics). In some traits, neither allele is dominant or many alleles control the trait. There are different ways in which traits can be inherited from parents to offspring.

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By Lisa Marie Meffert, PhD Rice University

BioEd Online. Heredity: Pedigrees- Working Out Inheritance Patterns. By Lisa Marie Meffert, PhD Rice University. Genology - Lee Family of Virginia and Maryland c1886 Apr. 26. Prints and Photographs Division, Library of Congress (LC-USZ62-90145). How is gender determined? (text p 318).

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How many chromosomes do humans have?

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Human Inheritance

Human Inheritance. Key Concepts What are some patterns of inheritance in humans? What are the functions of the sex chromosomes? What is the relationship between genes and the environment?. Key Terms. Multiple alleles Sex chromosomes Sex-linked genes carrier. Patterns of Human Inheritance.

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Human Inheritance

Human Inheritance. Key Concepts What are some patterns of inheritance in humans? What are the functions of the sex chromosomes? What is the relationship between genes and the environment?. Key Terms. Multiple alleles Sex chromosomes Sex-linked genes carrier. Patterns of Human Inheritance.

315 views • 17 slides

Mendelian Exceptions

Mendelian Exceptions. Objective: F3 - Predict possible outcomes of non-Mendelian inheritance & explain how sex is determined. Not all genes show simple patterns of dominant and recessive alleles Because the majority of traits are controlled by more than one gene/alleles.

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Pedigree

Unit 9 Objective 3: Pedigrees, Incomplete Dominance, Co-dominance, Sex-linked Traits and Genetic Disease. Pedigree. A diagram showing the presence or absence of a trait within a family (parents, siblings, and offspring) Used to determine how a trait/disease is inherited (dominant or recessive).

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Sex-linked Inheritance

X Marks the Spot!. Sex-linked Inheritance. Sex Chromosomes. Humans normally possess 23 pairs of chromosomes . 22 of these pairs are identical in both genders. They are called autosomes . 1 of these pairs differs between the genders; this pair is the sex chromosomes (X and Y) .

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Mendelian Exceptions

Mendelian Exceptions. Not all genes show simple patterns of dominant and recessive alleles Because the majority of traits are controlled by more than one gene/alleles. Cases in which both alleles are expressed White cow x Brown cow = Speckled (white and brown) cow. Codominance.

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sex-linked traits

sex-linked traits. Sex chromosomes carry genes that code for traits other than gender . Traits determined by genes on the X chromosome are called sex-linked traits . (hemophilia and colour blindness). A male has XY homologous chromosomes for sex determination.

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