Organisms inherit their genes from their parents. Asexual organisms simply inherit a complete copy of their parent's genome. Sexual organisms have two copies of each chromosome because they inherit one complete set from each parent.:1
কেন যৌন প্রাণীদের প্রত্যেকটা ক্রোমোজোমের দুটো করে কপি থাকে?
because they inherit one complete set from each parent