Genetics assignment two Essay Example | Topics and Well Written Essays - 500 words

Genetics designation two - Essay Examplesive alleles of each of these genes (a,b,c and d) produce abnormal enzymes that cannot catalyze a reaction in the biosynthetic pathway for seed pigment. The pathway is shown below2. In the Australian Shepherd, Hereditary Cataracts is an autosomal paramount disorder that results in abnormal clouding of the lenses of the eye. In some(prenominal) Aussies, heterozygous for Hereditary Cataracts, the disease is not always expressed. Based on this information, answer the following questionsb. Several alleles ar responsible for Hereditary Cataract formation. When present, some alleles result in very rapid cataract growth, whereas other alleles result in very slow cataract growth. What spoken language best describes the behavior of these various alleles?3. In the oriental fruit fly (Bactrocera dorsalis), a number of genes deposit eye color. A fly with wild-type eye (red) is botch uped to fly with yellow eyes. All the F1 fly from this cross have w ild-type eyes. When the F1 from the cross atomic number 18 interbred (selfed), 450 of the progeny have wild-type eyes, 150 have amethyst eyes (a blinding sparkling blue color) and 200 have yellow eyes.4. The Scots lumpy, a type of yellow-bellied from Scotland, can exhibit short-leg length and normal-leg length phenotypes. A breeder crosses two normal-legged Scots Dumpy, and finds that all of the F1 are normal-legged. The breeder repeats the cross and observes the same result. However, when the same breeder crosses a normal-legged fowl with a short-legged fowl, of the offspring are short-legged and of the offspring are normal-legged. Finally, following a third cross between two short-legged Scots Dumpy fowl, the breeder observes the following results among 200 offspring counted5. Fruit flies homozygous for the recessive allele, sc-, have bright red eyes. Fruit flies homozygous for the recessive allele, br-, have brownish purple eyes. Fruit flies homozygous recessive for both al leles have white eyes. Fruit flies that possess the sc+ and