Normally, neurospora can synthesize all 20 amino acids specified by the genetic code. a certain strain of this mold cannot grow in minimal nutritional medium but grows only when the amino acid leucine is added to the medium. this strain

mutation affecting the biochemical pathway leading to the synthesis of leucine.

Explanation:

According to my research on studies conducted by various biologists, I can say that based on the information provided within the question this strain has a mutation affecting the biochemical pathway leading to the synthesis of leucine. Since a mutation is a permanent alteration in the DNA sequence, thus changing its affects.

I hope this answered your question. If you have any more questions feel free to ask away at .

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.