Angiosperms are thought to have originated about __________ years ago.

a. 100 million
b. 450 million
c. 360 million
d. 500 million
e. 140 million


Answer: e. 140 million

Biology & Microbiology

You might also like to view...

The unexpressed regions of split genes are called

A. exons. B. introns. C. endons. D. codons.

Biology & Microbiology

In ____, genes at one locus mask the effect of genes at another locus

a. incomplete dominance b. codominance c. epistasis d. polygenic inheritance e. pleiotropy

Biology & Microbiology

Which of the following prokaryotic nutritional

groups use CO2 and sunlight to produce energy? a. photoautotrophs b. chemoautotrophs c. photoheterotrophs d. chemoheterotrophs e. all of these

Biology & Microbiology

What is a correct description of metaphase during mitosis?

What will be an ideal response?

Biology & Microbiology