In Population A, they analyzed 80 gene loci and found that 34 of them were polymorphic. Calculate the proportion of polymorphic gene loci in Population A. Give your answer to 2 significant figures.

In Population B, the ecologists studied a shell banding trait controlled by a single gene with two alleles:

• The allele for unbanded shells ($U$) is dominant.
• The allele for banded shells ($u$) is recessive.

The ecologists recorded the following frequencies in Population B:

• Total number of snails with unbanded shells ($UU$ or $Uu$) = 455
• Total number of snails with banded shells ($uu$) = 45

Use the Hardy–Weinberg equations to estimate the proportion of heterozygous individuals in Population B: $p^2+2pq+q^2=1$ $p+q=1$ Give your answer to 2 decimal places.