A chemical reaction which requires energy is called an ________________ reaction.

Consider the following representation of four chromatids during prophase I shown below. The paternal homologue is in upper case, while the maternal homologue is in lower case.A B C D E F GA B C D E F Ga b c d e fa b c d e f  If there was a single crossing over event between the second and third chromosomes from the left, the resulting chromosomes (in order) would be

This molecule occurs as a single long strand that passes from the nucleus to the cytoplasm in eukaryotes; it contains information for polypeptide assembly.

The transfer of information from DNA to mRNA is referred to as

Organisms that undertake sexual reproduction alternate between ______ and fertilization.

After fertilization, the resulting zygote develops by which of the following processes?

Cytokinesis occurs right after

Sexual reproduction and the close association between homologous chromosomes that occurs during meiosis probably evolved as a mechanism to repair _________ damage.

Of the 23 pairs of human chromosomes, 22 pairs are similar in the location of genes and are found in both males and females. These are called _________.

In one of the first steps in meiosis, the