What enzyme works to add DNA to ends in chromosomes rapidly dividi g cells such as those found in an embryo?

The enzyme that adds DNA to the ends of chromosomes in rapidly dividing cells, such as those found in an embryo, is called telomerase. Telomerase adds repetitive nucleotide sequences to the telomeres, which are the protective caps at the ends of chromosomes. This action helps maintain chromosome stability and prevents the loss of essential genetic information during cell division. In embryonic cells, telomerase activity is typically high, allowing for sustained rapid growth and division.