The karyotype for trisomy 21 illustrates an example of a genetic mutation caused by

What are two primary ways in which water that falls to earth as precipitation passes through the water cycle

Which of the following is consider a base? soda lemon juice battery acid bleach

What characteristics does a vírus share with living things?

A scientist is examining the role of an element found in fats and carbohydrates of living things. This element makes up 65% of human body mass.

Which enzyme is responsible for creating the covalent bonds that connect that sugar-phosphate backbone of the new DNA molecules

Why is the cell called the basic living unit of all living matter?

True or False All algae have roots, stems, and leaves.

How would a houseplant respond to sunlight that comes from one direction? A. by curling its stem around its leaves B. by closing its leaves at night C. by growing roots downward through the soil D. by bending its stem toward the sun

Hershey and chase used a dna-based virus for their work. How might the results have been different if they had used an rna virus?

State the function of DNA