I believe the correct answer is chromosome.
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Explanation:</h2>
We inherit 23 chromosomes from our mother and another 23 chromosome pairs from our father. You have to inherit a defective chromosome for you to get the mutation. This is what is called germ line mutation usually carried in the sperm or ovum. Of the 23 chromosomes, 22 are autosomal and 1 is chromosomal meaning of the 23 one of them is X and another one is . You get the Y from your father and the X from your mother.
The thermosphere keeps the earth from geting to hot frome the sun and it's the last layer so...the thermospher
The life cycle of plants involves into two parts, first is the diploid phase and the second would be the haploid phase. Therefore, the answer would be letter A. Palm trees are known to be perennial plants and usually grows in the environment that are warm and more humid.