Which of the following statements is true? Group of answer choices All forms of life employ the same genetic code mRNA is the only type of RNA found in the living system A typical human liver cell has one set of chromosomes Organisms interact but do not affect their environment

All the forms of life employ the same genetic code.  

•It is true that all the forms of life exhibits the same genetic code, however, they do not possess similar genome.  

•The set of rules used by the living cells is known as the genetic code.  

•It is used to translate information encoded within the genetic substance, that is, mRNA or DNA sequences into the proteins.  

•The genetic code is greatly identical among all the organisms and can be articulated in a simple table with 64 entries.  

Thus, the correct statement is that all the forms of life employ the same genetic code.

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All forms of life employ the same genetic code

Explanation:

The genetic code refers to the set of rules that facilitates the translation of nucleotide sequences into amino acids sequences (proteins). mRNA is read in a group of three nucleotides called CODON, which specifies a particular amino acid. The totality of all codons makes up the genetic code.

However, one of the characteristics of the genetic cos is its UNIVERSAL nature. The genetic code is said to be nearly universal meaning that the genetic code is the same in almost all living organisms with few exceptions. For example, AUG codon encodes Methionine amino acid in all forms of life.

Hence, All forms of life employ the same genetic code is TRUE. Note that, tRNA and rRNA are other types of RNA found in living systems. Also, liver cells are diploid i.e. has two sets of chromosomes. Lastly, interacting organisms affect their environment

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.