I’m pretty sure it’s letter D but if not i’m so sorry
In a monohybrid cross, if gene for tall (T) plants was incompletely dominant over the gene for short (t) plants, it will give plants with intermediate tall (Tt) in first filial (F1) generation. When the F1 offspring consisting of all intermediate tall are allowed to cross, the resulting (F2) offspring consist of all three phenotypes [25% tall (TT): 50% intermediate tall (Tt): 25% short (tt)]. The phenotypic ratio is 1:2:1.
When connected together by a series of peptide bonds, amino acids form a polypeptide, another word for protein. The polypeptide will then fold into a specific conformation depending on the interactions (dashed lines) between its amino acid side chains. ... Its conformation is essential to its function.
Big losses of genetic variation for the small populations are readily caused by genetic drift.