Biotic and abiotic factors because without abiotic factors the biotic organisms cant live in an ecosystem.
Answer:
Dihybrid cross: Cp cp W w x Cp cp W w
Gametes= CpW; Cpw; cpW; cpw
Cp Cp: lethal phenotype
Genotypes:
Cp cp W w >> creeper and white phenotype
Cp cp w w >> creeper and yellow phenotype
Cp cp W W >> creeper and white phenotype
cp cp W W >> normal (non-creeper) and white phenotype
cp cp W w >> normal (non-creeper) and white phenotype
cp cp w w >> normal (non-creeper) and yellow phenotype
Since it is a dihybrid cross that involves a lethal allele in homozygous condition (Cp), it is expected a phenotype ratio of 6:3:2:1, it is 6 (Cpcp W_ creeper white) : 3 (cpcp W_ normal white ) : 2 (Cpcp W_ creeper yellow) : 1 (cpcp ww normal yellow). This ratio is expected because it is a distortion from normal segregation proportions (i.e., instead of the 9:3:3:1 phenotypic ratio associated with dihybrid crosses).
Answer:
The enzyme that is responsible for adding nucleotides to the growing DNA molecule is called DNA POLYMERASE.
The principal role of DNA polymerase is to carefully and accurately add the right nucleotides to the growing DNA molecule in order to make sure that the genome is accurately replicated and the genetic information are maintained.
Parasites usually require a host organism to survive, as that host organism can provide them nutrients, protein, and the necessities to reproduce.
