Actin,

basic building block of microfilaments extraordinarily well conserved among eukaryotes.

TLS Online TPP Program

#Id: 8846

#Section 3: Genetics, Cellular and Molecular Biology

In budding yeast CKI p27 = Sic1 in metazoans

TLS Online TPP Program

#Id: 8093

#Section 2: General Biology

TLS Online TPP Program

#Id: 7926

#Section 3: Genetics, Cellular and Molecular Biology

Rough ER, which is associated with ribosomes, functions in the synthesis and processing of secreted and membrane proteins

Smooth ER, which lacks ribosomes, functions in lipid synthesis.

TLS Online TPP Program

#Id: 8960

#Section 3: Genetics, Cellular and Molecular Biology

Duplicate gene and its parental copy can subfunctionalize so that each carries out only some of the roles that the ancestral gene performed. 

Ex- a duplicate of the β-hemoglobin locus is expressed in the fetus. 

TLS Online TPP Program

#Id: 8886

#Section 3: Genetics, Cellular and Molecular Biology