Which of these would best describe why cells had to evolve to contain a nucleus before more complex, multicellular organisms could develop? a) without a nucleus, early cells did not have the ability to reproduce b) a nucleus allowed organisms to make necessary proteins and regulate homeostasis c) a nucleus had to evolve to hold the dna as simpler organisms did not contain dna d) the nucleus contained the genetic material is one location which made it more efficient to control cellular functions

Using freezing point depression to find molecular weight lab report

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates

What is the difference between sex-linked traits and autosomal traits in humans? a. sex-linked traits can only be passed from fathers to sons, while autosomal traits can be passed on from both parents to offspring of any sex. b. sex-linked traits are passed on through the x and y chromosomes, while autosomal traits are passed on through the other 22 chromosomes. c. sex-linked traits only affect females, while autosomal traits affect both males and females. d. sex-linked traits refer to genes that are on the x and y chromosomes, while autosomal traits refer to genes on all 23 chromosomes.