MCQ
A codon in mRNA has:
- A3 bases
- B2 bases
- C1 base
- DNumber of bases vary
Explanation:
The sequence of amino acids in proteins depends on the sequence of nucleotides in DNA.
The DNA produces mRNA molecules through the process of transcription. The mRNA is transported to the cytoplasm where it is translated into protein.
A sequence of three nucleotides in mRNA specifies a particular amino acid in a protein chain.
Hence, the genetic codon is a triplet.
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$I$. Decline in death rate
$II$. Rapid increase in $MMR$ and $IMR$
$III$. Rapid decline in $MMR$ and $IMR$
$IV$. Increase in the number of people, in the reproductive age group
$V$. Rapid increase in the death rate
$(1)$ End of process of oogenesis
$(2)$ Induces the completion of the second meiotic division
$(3)$ The corpus luteum degenerates
$(4)$ Signals for maintain progesterone level in blood
$(5)$ Formation of zygote