Punnet squares experiment lab Report Example | Topics and Well Written Essays - 1750 words

Punnet squ ares experiment - science lab Report ExampleThe phenotype is the way of the expression of the combination of the genes. When the two alleles for a particular characteristic are identical, it is called as homozygous allele and if different it is called as heterozygous allele. If two different alleles are insert in a trait, then only characteristics is expressed. It is called as Dominant allele and the other is called as the recessionary allele.In the scenario 1, the heterozygous grey-haired-bodied fly and the homozygous black-bodied fly are crossed and the first felial extension was obtained. The Punnet form for this crossing is given below. The F1 generation contains 2 heterozygous gray-bodied fly and 2 homozygous black-bodied fly as the offsprings.In the scenario 2, two heterozygous gray bodied flies are crossed and the first felial generation was obtained. It was found that the F1 generation contains 2 heterozygous gray bodied flies 1 homozygous gray bodies fly and 1 homozygous black-bodied fly as the offsprings. The Punnett Square for this crossing is given belowIn the scenario 3, homozygous long-winged fly and the homozygous vestigial winged fly are crossed and the first felial generation was obtained. The F1 generation was found to have 4 heterozygous long-winged flies. The punnett square for this crossing is given below.The fourth scenario is establish on the pairing of homozygous long-winged fly with the heterozygous long-winged fly. The F1 generation obtained was found to contain 2 homozygous long-winged fly and 2 heterozygous long-winged fly. The punnett square is given below.In the scenario 5, the mating of the heterozygous long-winged flies was carried tabu and the first felial generation obtained was found to contain 1 homozygous long winged fly, 2 heterozygous long-winged flies and 1 homozygous vestigial-winged fly. The punnett square for this mating is given below.The 6th Scenario is based on the mating of the homozygous gray b odied fly with the