What would be the result of a cytosine base being substituted for a thymine base in a DNA segment during DNA replication? The entire segment of DNA would be affected.

The sequence could code for the wrong amino acid during translation.

The cytosine base would pair with adenine when the DNA was replicated.

There would be no effect on the DNA.

1. key concept list themajor biomes, and give onecharacteristic feature of each.

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.