) After decades of work a scientist isolated a small amount of attractase, an enzyme producing a powerful human pheromone. To produce attractase for his personal use in large quantities, he obtained a complete genomic clone of the attractase gene, connected it to a strong bacterial promoter on an expression plasmid into E. coli cells. He was devastated to find out that no attractase was produced in the cells. What is a likely explanation for the failure

A complete eukaryotic gene was used into the bacteria genome

Explanation:

The atractase gene is an eukaryotic gene, which means that is composed of a  promoter, introns and exons. When the gene was connected to a strong bacterial promoter only the exons should be used in order to promote the correct translation of the enzyme.

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.