First inducers of the lens are foregut endoderm and cardiac mesoderm that underlie the lens-forming ectoderm during the early and mid gastrula stages.

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#Id: 2054

#Unit 8. Inheritance Biology

Leber hereditary optic neuropathy (LHON)- People who have this disorder experience rapid loss of vision in both eyes, which results from the death of cells in the optic nerve.

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#Id: 2073

#Unit 8. Inheritance Biology

Number of Barr bodies zero in human cells with different complements of sex chromosomes such as XO (loss of one sex chromosome) causes Turner Syndrome.

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#Id: 2074

#Unit 8. Inheritance Biology

Persons with Klinefelter syndrome have a Y chromosome and two or more X chromosomes in their cells such as XXY, XXYY, XXXY and XXXXY.

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#Id: 2075

#Unit 8. Inheritance Biology

More than two X-chromosome causes Poly-X female and Triplo-X

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#Id: 2076

#Unit 8. Inheritance Biology

During human chromosome rearrangements deletion onto the chromosome 5 in the short arm causes Cri-du-chat syndrome.

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#Id: 2077

#Unit 8. Inheritance Biology

During human chromosome rearrangements deletion onto the chromosome 4 in the short arm causes Wolf–Hirschhorn syndrome.