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كيف تحافظ الكائنات الحية على نوعها

07 يوليو 2014

*تحافظ الكائنات الحية على النوع، بفضل عملية التكاثر التي تتم بنمطين:
-تكاثر جنسي يميزه تدخل الخلايا الجنسية وحدوث الإلقاح.
-تكاثر خضري يتم دون تدخل الخلايا الجنسية فهو تكاثر لاجنسي.
*يتطلب التكاثر الجنسي عند الإنسان العمل بالقواعد الصحية لضمان سلامة الأجهزة التكاثرية وتفادي الأمراض الناجمة عن الشذوذ في العلاقات الجنسية.
مدونة البحوث العلمية

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العلوم الطبيعية

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