Students at Maple School earned $672 selling candies. They want to accumulate $2000 for a trip.  What percent of their goal has been reached?

10. Before cell division of somatic cells, each chromosome must be replicated.  After replication, the resulting two parts of each chromosome are held together by cohesion at the centromere.  These two parts when separated are referred to as:  

Change the fraction to a mixed number.

If a and b are rational numbers with and , and if m is an integer, determine if the following is true or false:  

The double helix model of DNA structure was proposed by

A retail store had monthly sales of $56200 and spent 20% of it on health insurance. How much was spent on health insurance?

24. During what stages of the cell cycle are sister chromatids bound together by cohesin?  

Crick and his colleagues proposed that the genetic code consists of a series of blocks of information, called ________, each corresponding to one amino acid in an encoded protein.

35. THIS IS NOT A HARD QUESTION…THINK: You are examining the effect of maturation-promoting factor (MPF) in sea urchin cells, which have a diploid number of 36. If you fuse a dividing sea urchin cell with a G1 arrested oocyte, what would be the outcome?  

In 1910, Morgan did a series of experiments with the fruit fly Drosophila, an organism where females are XX and males are XY. When a mutant male fly with white eyes was crossed with a wild type female with red eyes, none of the F1 progeny had white eyes but 18% of the F2 progeny had white eyes. Unexpectedly, all of these white-eyed F2 flies were males. Based on these results, Morgan concluded that white eyes is caused by a recessive X-linked allele. Suppose Morgan had found that half of the F1 progeny had white eyes but all of these white-eyed F1 flies were females. In this case, a valid hypothesis would be