Why did hershey and chase label the vital DNA with radioactive phosphorus and not radio active sulfur

1. What are some of the abiotic factors that scientists monitor when dealing with stream ecosystems?

If a cell starts off of 46 chromosomes how many chromosomes will it have after interphase in meiosis

In about 4 sentences, describe the path a piece of food takes from ingestion to excretion

Which biotic factor would limit the antelope population in the African savanna? A) bacteria B) lions Eliminate C) rainfall D) zebra

Grozda has suffered a stroke in the left hemisphere of the brain. Unfortunately, her speech is very "impoverished". The main symptom is that it is very hard for her to produce speech. Which part of her brain is most likely damaged?

Which portion (s) of a neuron is (are) likely to be associated with a sensory receptor or sensory organ?

What kind of inheritance occurs if red flowers crossed with white flowers produce offspring with red patches and white patches on their flower petals?

A circular opening cut into the skull to reveal brain tissue and decrease intracranial pressure is called a

Phytochrome plays a critical role in seed germination. which of the colors maximizes the seed germination?

If you were standing at the end of a pier with a stopwatch in hand, how would you measure the average wave period of the waves that pass by? •Why do successive (one after the other) waves that arrive at the beach have different heights?