In pea plants, tallness (T) is dominant over dwarfness (t). Two heterozygous tall plants (Tt × Tt) are crossed. What is the probability that an offspring is dwarf?
In the food chain Grass → Grasshopper → Frog → Snake → Eagle, the producers (grass) contain 10,000 J of energy. Following the 10% law, how much energy is available to the snake?