Among cattle, having horns is a recessive trait. Cattle without horns, which are called polled cattle, are common. Suppose a horned male mated with a polled female. Their offspring are all polled. On maturity, two cattle of the F1 generation mated. Their offspring are a mix of polled and horned cattle.

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risky behaviors. many behaviors are risky for your health and happiness. the main hazards include using tobacco, alcohol, and sexual activity.