How the Body Works : Crossing-over

Crossing-over

The process of crossing-over, which occurs during meiosis, is one the most important genetic events, for it guarantees the individual characteristics of each one of us. When the two homologous chromosomes lie side by side, breaks occur in the chromosomes and corresponding lengths of the chromosome are interchanged. This crossing-over disrupts the original sequence of alleles and interchanges parts of both maternal and paternal chromosomes so that the possible number of gametes with different genetic information that any individual can produce is almost incalculable. This is why a child may inherit his father's nose and his mother's eyes.

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[V0dkaLove]

@xXxdarkrebelxXx What are you doing on this video? And actually, many people do give a fuck.

[yoastinator]

uhm it is true since crossing over means allele switch places, which can carry a dominant allele for a big nose (fathers nose) and a dominant allele for brown eyes (moms eyes)

[sabertooth1980]

@AgentCool017 Transmute isn't how Evolution even works. That's Alchemy.

[tmiddled]

@AgentCool017 What is this genetic barrier for speciation? The only barrier that I have found in my studies of genetics in evolution is time. Also, there has been many instances of observed speciation (google is your friend here).

[MrCockSlut]

@AgentCool017 smells like bullshit to me

[ooosteve]

@AgentCool017

are you sure things can not mutate to make a new species?

I thought new species have been created by man... or maybe just variations of the same species?

either way, I dont know enough to argue, I am just guessing there must be reason the majority of todays scientist agree on evolution

[gimmethedish]

No, it allows a parent to pass on ONE allele (except in the case of sex chromosomes)

[andreihrusca]

yeah i was thinking the exact same thing.