Explain why the chromosomes in the second drawing have sister chromatids, but the chromosomes in the third drawing do not. What happened to the sister chromatids?

In pea plants, purple flowers are dominant over white flowers, which are recessive. Cross two homozygous dominant (PP) parents.

How will the level of carbon in the atmosphere change if humans do nothing to reduce their impact on the carbon cycle

Select all that are true when a muscle fiber is at rest. a. There is a charge difference across the sarcolemma. b. There is a charge difference across the sarcolemma. c. Sodium-potassium pumps are active. d. Sodium-potassium pumps are active. e.

Precipitation is more likely to occur A) When the air is saturated B) When condensation nuclei are present C) When warm air rises and cools D) All of these E) None of these My guess is C. Is that right?

What happens during prophase?

Which blood components work together to form a blood clot

What is the most likely reason that a long beak could be an adaptation for a bird living in a temperature forest?

Which of the answer choices is/are an example of post-translational modification? 1. marking proteins for enzymatic destruction 2. addition of a phosphate group to the side chains of amino acids such as serine, threonine, or tyrosine 3.

Complex chemistry is most related to

Two atoms are isotopes of the same element. Which of the following should be different for these two atoms? A. The behavior in a chemical reaction B. The number of neutrons C. The type of element D. The number of protons