Answer:
Hormones are produced by glands and sent into the bloodstream to the various tissues in the body. They send signals to those tissues to tell them what they are supposed to do. When the glands do not produce the right amount of hormones, diseases develop that can affect many aspects of life.
The correct answer is: To propose the theory of evolution by natural selection
Answer:
b. 1 long-stemmed plant: 1 short-stemmed plant
Explanation:
The short-stemmed plant would have genotype(tt) and the heterozygous long-stemmed plant would have the genotype(Tt). So when they will cross with each other half of the offspring will be long-stemmed plants and half will be short-stemmed plant.
T t
t Tt tt
t Tt tt
So the offspring which have Tt genotype will be tall and the offspring which have tt genotype will be short. Therefore the correct answer is b. 1 long-stemmed plant: 1 short-stemmed plant.
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Your question: ____________________ are chemical messengers that allow an organ to send signals to another distant organ in the body through the blood.
Your answer: Hormones are chemical messengers that allow an organ to send signals to another distant organ in the body through the blood.
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