100+ Sex determining chromosomes PowerPoint (PPT) Presentations, Sex determining chromosomes PPTs

Sex determining chromosomes - PowerPoint PPT Presentation

Human Genetics

Human Genetics . Inheritance in humans Male/female Multiple Alleles Inherited diseases Twins Sex-linked traits. Single genes (widows peak). Why is a guy a guy?. Color blindness is also Sex-Linked. Hemophilia. Inheritance in humans.

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Figure 9.4

Figure 9.4. Today we can show the exact location of genes (genotypes) on chromosomes. Gene loci. Dominant allele. a. P. B. Homologous chromosomes. b. P. a. Recessive allele. aa. Bb. PP. Genotype:. Homozygous for the recessive allele. Homozygous for the dominant allele.

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Sex-linked Traits

Sex-linked Traits. Using punnett squares. INHERITANCE OF SEX CHROMOSOMES. Humans have 23 pairs of chromosomes. Autosomes: 22 pairs are non-sex determining chromosomes. the 23rd pair determines the sex of the offspring. female sex chromosomes - XX. male sex chromosomes - XY.

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Sex determining chromosomes - PowerPoint PPT Presentation

Human Genetics

Figure 9.4

Sex-linked Traits