A new trait that allows a more efficient release of energy from food appears in a fly population. The trait proves beneficial to
survival and quickly spreads through the population. Which is the MOST likely origin of the new trait? A. the mutation of a gene that results in an altered protein
B. the adaptation of a new genes to existing genes in the digestive system
C. the combination of recessive genes in each generation
D. the replication of a gene that produces an increase in RNA
The answer is A. The mutation of the gene was a beneficial
one. It happened in a few individuals
and increased their survival rate. The mutation
was also inheritable hence was passed down generations. The new gene probably altered a protein involved in
metabolism. There are two other types of mutations;
deleterious and neutral.
An ionic bond is formed when an atom usually metallic, loses an electron to become positively charged and another atom usually non-metallic, gains such electron lost and becomes negatively charged..
