Which of the following is the cause for different seasons on earth?
a. the direction earth spins around it’s axis
b. changing levels of gas compositions throughput the year
c. the distance from earth to the sun
d. the way earth has a tilted axis

Adoctor is trying to diagnose a patient with dry skin. which of the following resources would be the most ? a magazine ad about soft skin a growth chart online articles about dry skin medical books

Can a trait be both polygenic and have multiple alleles? explain why or why not.

Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.