Question

the genes h and k act in accordance with the dobzhansky - muller model, leading to sterility in hybrids between two species of monkeyflowers. any combination of the h2 and the k1 alleles causes hybrids to be sterile. based on the dobzhansky - muller model, which genotype should have high fitness? o h1h1; k1k1 o h1h2; k2k2 o h2h0; k1k2 o h1h2; k0k1 o h1h2; k1k1

Explanation:

The Dobzhansky - Muller model states that hybrid sterility occurs when certain allele combinations interact negatively. Since any combination of $H2$ and $K1$ alleles causes hybrids to be sterile, genotypes without both $H2$ and $K1$ together will have higher fitness. Among the options, $H1H1; K1K1$ does not have the $H2$ allele which, when combined with $K1$, causes sterility.

Answer:

H1H1; K1K1