86 % of plants and animals
I believe the answer is A.
Given what we know, we can confirm that the result of crossing over during meiosis I gives rise to new combinations of genes in the gametes at the end of meiosis.
<h3>What is meiosis?</h3>
It is the process of cell division that occurs in the gonads for the production of gametes that gives four haploid cells. During the crossing over, what will happen is that the homologous chromosomes exchange parts and new combinations are given for the gametes.
Therefore, we can confirm that the result of crossing over during meiosis I gives rise to new combinations of genes in the gametes at the end of meiosis.
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I think the correct answer from the choices listed above is option A. If the reaction of maltase is optimum at the pH range of 6 to 7, then most likely when the ph is decreased into three maltase would not be able to function outside of its optimal pH range. Hope this answers the question.