IF THIS IS THE COMPLETE QUESTION WITH MULTIPLE CHOICE.
Two genes interact to produce various phenotypic ratios among F2 progeny of a dihybrid cross. Design a different pathway explaining each of the F2 ratios below, using hypothetical genes R and T and assuming that the dominant allele at each locus catalyzes a different reaction or performs an action leading to pigment production. The recessive allele at each locus is null (loss-of-function). Begin each pathway with a colorless precursor that produces a white or albino phenotype if it is unmodified. The ratios are for F2 progeny produced by crossing wild-type F1 organisms with the genotype RrTt.
9/16 Dark Blue 6/16 light blue 1/16 white
A) At least one copy of each dominant allele results in dark blue, at least one copy of either dominant allele produces light blue, and the absence of both dominant allele produces white.
B) If both dominant alleles are present, the result is dark blue. At least one copy of one specific dominant allele is required for light blue. If that dominant allele is not present, the result is white, regardless of whether the other dominant allele is present.
C) At least one copy of both dominant alleles results in dark blue; at least one copy of one of the dominant alleles also results in dark blue, but at least one copy of the other dominant allele produces light blue; and the absence of either dominant allele produces white.
MY ANSWER IS:
A) At least one copy of each dominant allele results in dark blue, at least one copy of either dominant allele produces light blue, and the absence of both dominant allele produces white.
The best model there is for the carbon cycle
The answer is aldosterone. This hormone determines the rate
of re-absorption of H+ ion and bicarbonate ions by the kidneys. Due to high
levels of bicarbonate being produced by the pancreas, the blood will be basic.
The kidneys will therefore be signaled to excrete more bicarbonate ions.
A statement that carbon is matter and cannot be created or destroyed is an example of part of a scientific theory and is denoted as option A.
<h3>What is a Theory?</h3>
This term refers to series of principles which helps to explain a particular phenomenon.
The most suitable choice will therefore be option A as it helps to explain why carbon can't be created or destroyed due to it being a matter and is the correct choice.
Read more about Theory here brainly.com/question/11555274
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The options include:
A. A statement that carbon is matter and cannot be created or destroyed
B. A policy to reduce the amount of carbon released as pollution
C. An explanation of how plants use carbon for photosynthesis
D. A prediction that fertilized plants will grow taller than unfertilized
plants
