visual experience sensitive period two-eye 3D vision

Early visual experience teaches the eyes to work together

Some abilities must develop during a limited period early in life. During the second half of a baby's first year, normal visual experience helps the brain learn to combine information from both eyes into one three-dimensional view.

Most of an egg cell's DNA copies can be mitochondrial

Up To 90%

A human egg cell can contain up to 1.5 million copies of the small mitochondrial genome. Because there are so many copies, mitochondrial DNA can make up as much as 90% of all the separate DNA molecules in the cell.

Hearing neighbors may use the same sign language

In small, closely connected communities where deafness is common, hearing residents may adopt the sign language used by deaf residents. Deaf people there may be well integrated into community life rather than forming a separate, disadvantaged group.

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visual experience sensitive period two-eye 3D vision

Early visual experience teaches the eyes to work together

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