Why do we have 46 chromosones? (Read details)?

Question

Recently watching a documentary about Neanderthals and Homo Erectus, it was said that they had 48 chromosones but the Homo Sapien Sapien has only 46. Why is this?

Answer 1

because each of our parents give us 23 chromosones when were born

if your one off you could be a different creature...

like a fish hahha

Answer 2

The old chromosones that were used to control instincts we don't need anymore were lost due to selective breeding

and/or

Chromosones morphed together to create new ones

<3

Answer 3

what were (and still are in modern great apes) the 2nd and 3rd chromosomes of prehistoric man.. merged sometime around 100,000 years ago to form the modern 2nd chromosome.. and by effect modern man

Answer 4

Some of the old chromosomes joined togther to make longer ones, don't forget, the amount of DNA does not relate to intelligence or any trait like that!