There are giraffes that show an incomplete dominance in neck size. A giraffe with a tall neck (TT) is crossed with a giraffe with a medium neck (TS). What fraction of giraffes will also be tall?
A 50%
B 100%
C 25%
D 75%
HELPPP

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

What is a group of organisms called

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.