1) D chromosomes
2) B a double helix
3)A chromosomes are made of DNA
4)A genes
Answer:
Option C, At a subduction zone, oceanic crust is forced deep into the Earth.
Explanation:
At sub-duction zone, the dense oceanic plates coincides with the less dense continental plates and thus sink below the continental plates. Sometimes these oceanic plates being dense, sink to greater depth with in the earth’s mantle. The sub-duction zone causes earth quakes of high intensity when oceanic crust penetrates to greater depths of earth crust as they tend to change the rheology of the earths’ mantle and also causes bending of plates
Hence, option C is correct
Answer:
the three-base sequence of mRNA
Explanation:
Translation is the process of formation of proteins. Translation process is achieved with the help of ribosome, which links amino acids in the order defined by messenger RNA (mRNA), using RNA (tRNA) transfer molecules to hold amino acids and read three nucleotides at a time of the mRNA.
The three-base sequence are present in mRNA called codons or mRNA nucleotide triplet sequences are specific to a amino acids for proper function. For exmaple: AUG codon , specifies the amino acid methionine which acts as starts codon and initiate the process of translation.
Hence, during translation, the characteristic that represents the three base sequences of mRNA is related to the coding of single amino acid.
