Question

the passage of this trait.
frank
maria
lisa
rosa
marco
lauren
caleb
molly
which statement about this family’s pedigree is correct?
marco carried the gene for color blindness, but lauren did not.
lauren carried the gene for color blindness, but marco did not.
marco and lauren both carried genes for color blindness.
frank and caleb both carried genes for color blindness

Explanation:

To determine the correct statement, we analyze the pedigree (assuming color blindness is X - linked recessive). Males (squares) have one X chromosome. Marco (male) and Caleb (male) – if Marco carried the color - blindness gene (X - linked recessive), and Lauren (female, circle) could be a carrier or not. But in X - linked recessive, for a male to pass the gene, and if we assume the trait's inheritance: Marco (male) can carry the gene on his X, and Lauren (female) may also carry it (as she has two X chromosomes). The other options have contradictions: Frank (male, square) – if he didn't show the trait, he may not carry; and the other single - carrier options don't fit X - linked recessive logic as both Marco (male, X - linked carrier - like) and Lauren (female, potential carrier) would need to carry for possible inheritance to Caleb (male) or Molly (female). So the correct statement is that Marco and Lauren both carried genes for color blindness.

Answer:

Marco and Lauren both carried genes for color blindness.