What factors play into making the mapping of the earth's ocean floor more difficult?

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

What is a codon and where is it found

Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups