About 1.2 billion years ago, eukaryotic and multicelled organisms evolved because oxygen became available from cyanobacteria banded iron formations developed meteorite impacts increased the atmosphere got thicker from volcanic outgassing

The allele for curly hair is incompletely dominant. if a mother is homozygous for curly hair and the father is homozygous for straight hair, what percentage of the offspring will exhibit characteristics of both parents? 25 percent 50 percent 75 percent 100 percent

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?