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Sex Chromosomes Determines the sex of the individualFemale has two identical X chromosomes (XX) Male has dissimilar chromosomes One X and one Y (XY)
Autosomes Chromosomes that are not sex chromosomesHave no effect on determining the sex of the individual How many pairs of autosomes do humans have?
Sex Determination Which parent is responsible for determining the sex of the offspring? The father because he has both the X and the Y chromosomes
Genes on Sex ChromosomesGenes located on sex chromosomes are sex-linked What are some traits that are sex-linked?
Sex-Linked Traits Colorblindness Hemophilia Muscular Dystrophy
Sex-Linked Genes and Pedigrees. Linked Genes Some genes are linked because they are on the SAME chromosome. A chromosome is a set of linked genes. Remember:
Karyotypes and Sex-Linked Traits
AUTOSOMES= The first 22 pairs of homologous chromosomes. All of the chromosomes surrounded by the red box are autosomes or autosomal chromosomes.
Sex Determination Of the 46 chromosomes, 2 are designated sex chromosomes (X & Y) the rest are designated autosomal.
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.
What’s Your Blood Type? A B AB O.
Sex-Linked Punnett. Karyotype A photograph of a cell’s chromosomes arranged in pairs according to size.
Sex Determination People – 46 chromosomes or 23 pairs 22 pairs are homologous (look alike) – called autosomes – determine body traits 1 pair is the sex.
Sex Linked Traits Humans have 23 pairs of chromosomes.
Codominance and Sex-linked traits. CODOMINANCE 2 alleles are dominant and both are expressed Most common examples are blood type and flower color.
SEX DETERMINATION & SEX-LINKED INHERITANCE. SEX DETERMINATION l The greatest difference between individual members of the same species is their sex.
Sex-Linked Traits Chapter 4.1. Answers to Questions 1. What are sex-linked traits? - Human traits that are carried on the sex chromosomes. 2. What’s a.
Humans have 23 pairs of chromosomes (total of 46. One pair of chromosomes is related to the sex of an individual, these chromosomes are called sex chromosomes.
Sex-linked Traits. Sex Determination Sex chromosomes – determines the sex of an individual YY XX Males have X and Y Two kinds of gametes Female.
CHAPTER 12 SEX-LINKED TRAITS
Quiz 7E Variations in Mendel's Theories Sex-linked Traits.
Xy = XX= female male Female karyotype Male karyotype.
1/14/15 Objective: How do sex-linked genes produce different inheritance patterns in males and females? Do Now: Take out assigned homework.
Chromosome Theory & Heredity. Gene Linkage Where two or more genes occurs on the same chromosome – Located in close association with one another – Tend.
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