The segment of mRNA below includes the region that codes for…

The segment of mRNA below includes the region that codes for the binding site for the initiator tRNA that is needed in translation. 5′-GUUUCCCGUAUACAUGCGUGCCGGGUAGCCC-3′ Use the genetic code table to translate the sequence into a polypeptide sequence. Write your answer using the single letter abbreviations for the amino acids.  

In mammals, females have two X chromosomes and males have a…

In mammals, females have two X chromosomes and males have a single X chromosome in addition to a Y chromosome. Thus, females have a ‘double dose’ of all the genes on the X chromosome. Females address this imbalance by inactivating one of the two X chromosomes in every cell. How do the cells do this?