In fruit flies, bar eye is inherited by a dominant X-linked allele (B for bar). If a heterozygous bar-eyed female is mated to a non-bar-eyed male, what will be the expected ratio of phenotype given four offspring?

Which of the following process/processes takes place during transcription?

Genes that are linked

An XXX female would most likely result from nondisjunction in

A cluster of prokaryotic genes under the control of one regulatory sequence is called a(n)

The leaves of a maple tree vary in size depending on the location of the leaves on the tree. Those growing at the outer region of the tree tend to be smaller than those growing closer to the trunk of the tree. This allows leaves that are growing in the shade to have a larger surface area. This is an example of 

A nucleus is collected from an older adult for fertilization. Since this nucleus was from an older mature animal, which of the following would be a reasonable expectation?

DNA segments at the ends of chromosomes that shorten every time a cell divides are called  

Chargaff’s rules of DNA structure states that

During meiosis, what process can sometimes “unlink” genes?