In sheep, white vs yellow body fat is determined by a single pair of autosomal alleles. in a large, randomly mating flock, 23 percent of the sheep have white fat and 77 percent have yellow fat. you may conclude from this data that:
a. the allele for yellow is dominant to white
b. the allele for white is dominant to yellow
c. the alleles for yellow and white are codominant
d. the alleles for white and yellow are in a hardy-weinberg equilibrium
e. none of the above are valid conclusions

Option A , The allele for yellow is dominant to white

Explanation:

It is given that 23 percent of the sheep have white fat and 77 percent have yellow fat.

Thus, it is clear that sheeps with yellow fat is a dominant characteristics.

Usually, the frequency of homozygous recessive allele in a given population is represented by  

and here

Frequency of allele for white fat

While frequency of homozygous dominant allele and heterozygous dominant allele is represented by

And here

Allele for yellow fat

Hence, option A is correct.

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.