Which is an external environmental factor that affects heredity?

If a chemical reaction catalyzed by an enzyme is being carried out, and there is a sudden, drastic decrease in temperature, what is most likely to happen next?

Li Ming thinks that chlorophyll is a reactant of photosynthesis, but her classmate Julian disagrees. Who is correct, and why?

If the sequence of nucleotides in one chain of a DNA molecule is T-C-A-A-G-C, a new nucleotide chain will be produced during the replication with the complementary sequence: A. T-C-A-A-G-C B. A-G-T-T-C-G C. C-T-G-G-A-T

5. The DNA scans of three frogs are shown below. The highlighted bands determine the skin color, eye color, and whether the frogs have spots or not. Which codon determines skin color? 20 A Bands 2-4 B. Bands 7-9 C. Bands 18-20 D.

Amarck convinced darwin that populations could grow faster than their resources. a. True b. False

When cells divide during meiosis homologous chromosomes are randomly distributed to daughter cells and different chromosomes segregate what of each other?

What do all wetlands have in common? A. They lack life-forms. B. They are highly polluted. C. They are swamps. D. They recycle nutrients into the soil.

Lysis of adhesions is performed on either the fallopian tubes or the: answer vagina uterus ovaries vulva

What is the relationship between DNA and chromosomes? a. Chromosomes are made out of DNA. b. DNA is made out of chromosomes. c. DNA and chromosomes are the same thing. d. DNA forces chromosome to mutate.

When scientists uncover a fossil, they record the precise location where the fossil was found. Does this location provide useful evidence for conclusions about the fossil and evolutionary processes? A. Yes.