The power house of the cell
only thing I remember from freshman year
Answer:
take the information in DNA and use it to produce proteins. Transcription uses a strand of DNA as a template to build a molecule called RNA. ... During translation, the RNA molecule created in the transcription process delivers information from the DNA to the protein-building machines
Explanation:
which translates mRNA. tRNA is the link between the two other types of RNA.
They find shells that other crabs have left behind and use them
I think a frameshift mutation that occurs very early in a protein sequence would have an effect on the structure of the protein such that the primary, secondary, and tertiary structures would be altered. A frameshift mutation occurs when a protein is drastically altered because of an insertion or a deletion. Insertions and deletions cause a change in the length of a gene, which causes a shift in the codon reading frame.
It is an example of directional selection.
The different kinds of natural selection can influence the distribution of phenotypes within a population. In stabilizing selection, an average phenotype is preferred.
In directional selection, a modification in the surrounding changes the spectrum of the observed phenotypes, and in diversifying selection the extreme values for a trait are preferred over the transitional values. This kind of selection usually pushes speciation.
The directional selection, in the field of population genetics, refers to a mode of natural selection in which an extreme phenotype is preferred over other phenotypes, making the allele frequency to change with time in the orientation of that phenotype.
