Sickle cell anemia is a genetic disorder obtained from a. exposure to large quantities of toxic chemicals b. a skin mutation caused by ultraviolet light c. inheriting a mutation in the dna sequence of a particular gene. d. exposure to a blood-related pathogen.

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. the following chemical equation shows the combustion of ethane. balance the equation by filling in the coefficients. c2h6 + o2 → co2 + h2o

Drag each tile to the correct box. arrange the phases of mitosis in the correct order. 1 (condensation of chromosomes) 2 (separation of chromosomes) 3 (formation of spindle fibers) 4 (alignment of chromosomes in the center of the cell) 5 (pinching of the cell membrane)

The transport tubes for food coming down the plants are called?