A form such as /_ʌt/ in which different sounds could be inserted in place of the underline is called a substitution frame.
Explanation;
-Substitution frame is a form that has a slot that can be filled in with different items. is used to identify different phonemes.
-A form such as /_ʌt/ in which different sounds could be inserted where the underline is located, is used, in part, to establish whether different sounds are different phonemes or not. A phoneme is a perceived unit of language that signals a difference in meaning when contrasted to another like itself.
-Free variation is a condition in which phonetically different sounds may occur in the same environment without changing meaning. Redundancy is when more information than necessary under ideal conditions is present.
Natural selection is the survival of individual organism due to the difference in phenotype. It serves as a basic for evolution as the different heritable characteristics in an individual is due to natural selection. Natural selection acts on the phenotype of the individual which is the visual observance while Genetic drift is the change in frequency of an allele that already exist in a population. This could lead to the allele being selected against and if very small can be lost with time.
<span>First step. It dehydrogenation produces a double bond between the α and β carbon atoms (C-2 and C-3), yielding a trans-Δ2-enoyl-CoA. The symbol Δ2 designates the position of the double bond.</span>
