In gremlins, hairy shoulders are dominant over non-hairy shoulders. Peter the Gremlin, who has very hairy shoulders, was adopted at birth and he is finally reunited with his parents 30 years later. He brought his girlfriend, Gretchen the Gremlin, to the reunion. Gretchen studies genetics in college, and notices that neither of Peter's parents have hairy shoulders. What are Peter's parents genotypes? What are Peter's possible genotypes? Why do you think that Gretchen is concerned?

Peter's parents genotypes: hh and hh

Peter's possible genotypes: HH or Hh

Gretchen's concern: The legitimacy of Peter's parent is doubtful

Explanation:

Assuming hairy shoulders allele is represented by H and non-hairy shoulder allele by h. H is dominant over h, hence, for someone to have a hairy shoulder, he/she must posses one H allele (Hh or HH).

Peter's parents do not have hairy shoulders, hence their genotypes will be hh and hh.

Peter has hairy shoulder, hence, his genotype is either HH or Hh.

Gretchen is concerned because neither of Peter's parents have hairy shoulder. This means neither of the parents have the hairy shoulder allele (H). The concern of Gretchen would be about the source of Peter's hairy shoulder allele. If neither of the supposed parents have the allele, where did he get his allele from?

The legitimacy of Peter's parents is questionable and this is why Gretchen is concerned.

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: