Нормальные крылья и красные глаза у дрозофилы - доминантные проявления признаков, отсутствие крыльев и билоокисть - рецессивные. Дигетерозиготну самку скрестили с гомозиготным бескрылым красноглазым самцом. В первом поколении получили 320 особей. Сколько из них теоретически может быть белоглазых особей с нормальными крыльями?

ответ:Природные экосистемы

Искусственные экосистемы

Пр. Эк. Главный компонент — солнечная энергия.

Ис. Эк. В основном, получает энергию из топлива, и готовой пищи (гетеротрофны)

Пр. Эк. Формирует плодородную почву

Ис. Эк. Истощает почву

Пр. Эк. Все природные экосистемы поглощают углекислый газ и производят кислород

Ис. Эк. Большинство искусственных экосистем потребляет кислород и продуцирует углекислый газ

Пр. Эк. Большое видовое разнообразие

Ис. Эк. Ограниченное количество видов организмов

Пр. Эу. Высокая устойчивость к саморегуляции и самовосстановлению

Ис. Эк. Слабая устойчивость, так как такая экосистема зависит от деятельности человека

Пр. Эк. Замкнутый обмен веществ

Ис. Эк. Незамкнутая цепь обмена веществ

Пр. Эк. Создает места обитания диких животных и растений

Ис. Эк. Разрушает ареалы дикой природы

Пр. Эк. Накапливает воду, разумно расходуя ее и очищая

Ис. Эк. Большой расход воды, ее загрязнение.

Донник лекарственный, донник белый, чечевица пищевая, акация желтая, люпин желтый, горох посевной, клевер красный.

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