This is such a vague question. Are you asking what it is or how to trace the process?
Water treatment<span> is any process that makes </span>water<span> more acceptable for a specific end-use. The end use may be drinking, industrial </span>water<span> supply, irrigation, river flow maintenance, </span>water<span> recreation or many other uses including being safely returned to the environment.</span>
<span>If the parents are both heterozygous for </span><span>particular traits their genotype would be: AaBb x AaBb ( this cross would be the F1 generation while the P generation is the one that originated the parents).
This cross would result in the folowing genotypes:
AABB
AaBB
Aabb
aaBB
aaBb
aabb
Dominant for A and B: 9/16
Dominant for A but recessive for B: 3/16
Recessive for A but dominant for B: 3/16
Recessive for A and B: 1/16
ratio: 9:3:3:1
To answer you the possible phenotypes is difficult because your question is missing information about what each gene does, but I know it would be 4 different phenotypes.
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Answer:
its c. lets molecules pass in and out....