Species that live in similar niches in different regions are

What is the compliment dna strand to the following sequence: ttgactaggcta

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

1. in what ways have non-native species been beneficial? 2. what are some of the hypotheses for the collapse of honeybee colonies? 3. distinguish between regional and functional extinction. 4. why is it difficult to measure background extinction rates? 5. what three factors are most important in causing extinction rates to climb?