C. The separation of sister chromosomes
As per the given scenario, the chances of an offspring as a male or female is 50% each.
<h3>What are chromosomes?</h3>
The thread like structure resides inside the nucleus is referred to as chromosomes.
As there are 23 pair of chromosomes present in the organisms, they transfer their equal numbers in the future generation with some variations.
As per the given image, it is clearly shown that there is 50% possibility of being male or female offspring.
Thus, the chances of an offspring of this pairing being born male or female are 50%.
For more details regarding chromosomes, visit:
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The answer could possibly be natural selection or survival of the fittest
