Pea plants can self-pollinate (sperm and eggs both come from the same plant) or they can cross-pollinate (sperm and eggs come from different plants). Gregor Mendel used this to study heredity. He found that if he took a plant that only produced yellow peas and crossed it with a plant that only produced green peas, all the offspring would only produce yellow peas.On the other hand, if he left the offspring (all yellow pea plants) alone and let them self-pollinate, then the second generation had a ratio of 3:1 yellow to green pea plants. Thus, Mendel could demonstrate that some traits are “dominant” while others are “recessive.”Referring to this passage, what could Gregor Mendel conclude from the result of his experiment with green and yellow pea plants?
Answer(s): A
Carbohydrates are macromolecules that can be divided into three main types. Name the types of carbohydrates.
The autonomic nervous system can be divided into two branches. What are they?
Answer(s): B
In this diagram of the brain, some of the labels are missing. What should the labels be?
What set of signals is the vagus nerve responsible for conveying?
Answer(s): D
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