Izmenchivost mutatsionnaya, mutatsion o’zgaruvchanlik nima degani
Izmenchivost mutatsionnaya, mutatsion o’zgaruvchanlik nima degani – ayrim individda uning ajdodlarida hech uchramagan yangi irsiy xossaning birdan paydo bo’lib qolishi, o’zgaruvchanlikning bir formasi.