Answer:
any change at the third codon position
Explanation:
The genetic code is considered to be degenerate because a single amino acid may be coded for more than one codon. In this case, Leucine (Leu) is an amino acid that can be encoded by four different codons: CUU, CUC, CUA and CUG codons. In consequence, all nucleotide changes (mutations) at the third codon position don't affect the synthesis of Leu. This type of mutation that does not alter the sequence of amino acids is called silent mutation.
I think that question is true don’t but not sure
The layer B above the surface of the earth can be identified as the mesosphere. It is a layer of earth’s atmosphere which is located above the stratosphere and below the thermosphere. The characteristic features of mesosphere are as follows-
1. In mesosphere, the temperature decreases as the altitude increases due to the decreasing absorption of the solar radiation.
2. Mesosphere extends from 50 to 85 km above our planet earth.
3. The top of the mesosphere is called the mesopause which is the coldest part of the earth’s atmosphere.
4. The noctilucent clouds or the night-shining clouds are located in the mesosphere.
Answer:
Los fósiles, una prueba de la evolucion. El estudio de los fósiles nos da una idea muy directa de los cambios que sufrieron las especies al transformarse unas en otras; existen muchas series de fósiles de plantas y animales que nos permiten reconstruir cómo se fueron adaptando a las cambiantes
Explanation:
