You conduct experiments to change the dna of the flax plant in hopes of breeding a stronger source of linen. you notice that a single change to a gene causes the sequence of protein a to become drastically longer. what could that change be?

there has been a change of the stop codon.

Explanation:

The stop codon is necessary to stop the synthesis of a protein. When protein A becomes longer than it used to be, it is an indication that the stop codon has been changed hence the increased synthesis of protein A.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

idk

explanation: