Single-gene inheritance - Sex-lined single-gene inheritance patterns - Sex-linked patterns of inheritance

6 important questions on Single-gene inheritance - Sex-lined single-gene inheritance patterns - Sex-linked patterns of inheritance

What are differential regions?

Area on the chromosome that contains most of the genes. These genes are hemizygous and have no counterparts on the other sex chromosome.

Cytogeneticists divide the X and Y chromosomes into ... and ... regions.

homologous, differential

What does the differtial region on the X-chromosome contain?

The regin contains hundreds of genes; most do not have a sexual function, and they influence a great range of human properties.
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What does the differential region on the Y-chromosome contain?

The region only cotains a few dozen of genes; most do not have counterparts on the X chromosome, they take part male sexual function.

Wht are the two types of sex linkage?

  • X-linkage when the gene is on the X-chromosome
  • Y-linkage when the gene is on the Y-chromosome

In general, genes in the differential regions are said to show inheritance patterns called ...
Mutant alleles in the differential region of the X chromosome show a single-gene inheritance pattern called .... Mutant alleles of the few genes in the differential region of the Y chromosome show ...

Sex linkage, X linkage, Y linkage

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