Question

Homologous recombination is an important mechanism in which organisms use a "backup" copy of the DNA as a template to fix what without loss of genetic information?

1) 3′ DNA strand overhangs
2) 5′ DNA strand overhangs
3) a long stretch of sequence similarity
4) nucleases

Answer 1

Homologous recombination is a DNA repair mechanism that uses a backup copy of DNA to fix double-stranded breaks without loss of genetic information. It involves pairing the damaged DNA strand with a homologous undamaged DNA strand and using it as a template to accurately repair the break.

Step-by-step explanation:

Homologous recombination is an important DNA repair mechanism that uses a backup copy of DNA to fix double-stranded breaks without loss of genetic information. During homologous recombination, the damaged DNA strand pairs with a homologous undamaged DNA strand and uses it as a template to accurately repair the break. This process relies on the formation of a nucleoprotein filament and invasion of the homologous DNA. The repaired DNA is then ligated to complete the repair.