Cracks in a rock is considered is chemical weathering.
Answer:
The cell membrane is a semi-permeable membrane that surrounds the cytoplasm . the main fuction is to protect the interior of the cell by allowing certain substances get into the cell while keeping other substances out.
Explanation:
Salutations!
<span>Which characteristic is common to all prokaryotes and eukaryotes?
The ability to respond to external stimuli is the characteristic that is common to all prokaryotes an eukaryotic cells. Stimulus help detects change in the cell, as we are speaking of cells. The cells responding to the stimulus is called sensitivity.
Thus, your answer is option B.
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Have a great day!</span>
Answer:
Barr body may be defined as the one of the inactive X chromsome of the human female. The human female consists of XX chromosome whereas XY in male. To compensate the extra X chromosome in female one of the X chromosome become inactive and known as barr body. The barr body is found in the somatic cells.
Lyon hypothesis:
Lyon hypothesis states that dosage compensation occur in human females by the random inactivation of one of the X chromosome. The inactivated X chromosome is named as barr body. The lyon hypothesis was given by Mary Lyon.
