Вопрос
Features of genetic material in prokaryotes are a. all the chromosomes carry secondary constrictions b. single circular chromosome c. single linear chromosome d. number of chromosomes is peculiar to species
Решения
4.2
(303 Голоса)
Станислав
мастер · Репетитор 5 лет
Ответ
The correct answer is b. single circular chromosome.In prokaryotes, the genetic material is typically organized in a single circular chromosome. This chromosome is not enclosed within a nucleus, as prokaryotes lack a true nucleus. The circular chromosome contains all the essential genetic information required for the cell's growth, reproduction, and other vital functions.Option a, 'all the chromosomes carry secondary constrictions,' is incorrect. Secondary constrictions are regions where the chromosome is thinner and more likely to break during cell division. These are typically found in eukaryotic chromosomes, not prokaryotic chromosomes.Option c, 'ingle linear chromosome,' is also incorrect. Prokaryotes do not have linear chromosomes; their chromosomes are circular.Option d, 'number of chromosomes is peculiar to species,' is a general statement that applies to both prokaryotes and eukaryotes. While it is true that the number of chromosomes can vary among different species, this option does not specifically describe the features of genetic material in prokaryotes.Therefore, the correct answer is b. single circular chromosome.