Question

Cells of different species, when observed in nutrient solutions, are seen to divide varying numbers of times, with cells of the most long-lived species dividing more times than the cells of short-lived species. The total number of divisions for any given species is sometimes referred to as _______.

Answer 1

Answer:

the Hayflick limit

Explanation:

The Hayflick limit denotes the number of times the cells divide till the cell division stops.

Cell division depends on the length of the telomeres which are at the end of each chromosome. As cells divide the telomeres keep shortening, once the telomere length reaches a critical length the cells stop dividing.

A telomere is located at the end of each chromosome where there are repetitive nucleotide sequences.