Scientists have concluded that the average human body contains approx. 37.2 trillion cells. However it depends upon your size compared an average human being. :)<span />
I believe the answer is a. crossing over
The correct statement is: (2) Sister chromatids are genetically identical.
Sister chromatids are the copies of a single chromosome. These are therefore genetically identical. The sister chromatids are joined together at the region called centromere with the help of certain proteins. The chromatids are formed during the S phase of the interphase due to a process called duplication.
Chromosome is the compact form of DNA. It consists of the genetic material and certain proteins called histone proteins. The main role of chromosome can be seen during cell division. This is because the division of genetic material takes place in the chromosomal form.
To know more about sister chromatids, here
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Th correct option is 4.
There are different types of connective tissues and each have its own function. The deep fascia is the connective tissue that is responsible for support and protection of other muscles and soft tissue structures. The muscle usually surround other muscles, nerves and blood vessels and it bind all these structures together. The deep fascia muscle does not have fat, it is inelastic in nature and quite tough because of the high content of elastin which it possesses.
20. Cell Membrane 19. Mitochondria 18.<span> Osmosis</span>
