a chemical substance produced and released into the environment by an animal, especially a mammal or an insect, affecting the behavior or physiology of others of its species.
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A test cross between an organism whose genotype for a certain trait is unknown and an organism that is homozygous recessive for that trait so the unknown genotype can be determined from that of the offspring.
Answer:
You'd use it when you wish to see if the one that you think is a homozygous dominant is a purebred, because if you did get a recessive offspring then it proves that the animal is a heterozygous and not a purebred.</span>
When the moon appears to be shrinking it is said to be waning. Hope this helped!
Answer:
a tornado is a very destructive cloud that destroys things bring a lot of damage and harm to everybody where that tornado is located
Explanation:
