Yellow River Civilization
Answer:
Fruit Flies, long wings (L) are dominant to short wings (l) show the results crossing a heterozygous with a long wing fly with a short wing fly What are the possible genotypes and phenotypes for this offspring?
Ll x Ll= LL, Li, Li and ii
2 homozygous (one is long wing fly and the other is short wing fly) and 2 dominant heterozygous
the genotype is 3:1 while the phenotype reflects 3 dominant long wing fly and 1 short wing fly
Explanation:
The manipulation of genes for practical purposes, such as medicine, agriculture, or criminal justice, is called GENETIC ENGINEERING. These technologies involve the manipulation of the DNA molecule.
Deoxyribonucleic acid (DNA) is the molecule that carries the instructions (i.e., genes) for all organisms to develop, survive, grow and reproduce.
Genetic engineering techniques consist of the manipulation of the DNA molecule in order to produce desirable phenotypic features in the offspring of an organism.
Genetic engineering techniques use recombinant DNA strategies to modify the genetic makeup (DNA) of the target organism.
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Answer:
A: Tt, Tt
B: 25%
C: 50%
D: 25%
E: 75%
F: 25%
Explanation:
Heterozygous has Tt. Homozygous had TT or tt. Punnett square:
T t
T TT Tt
t Tt tt
1/4 of the offspring are homozygous recessive(tt). That means they are short. 1/4 are homozygous dominate (TT) they are tall. 1/2 is heterozygous(Tt), they are tall.
