Two identical cells are formed. Each cell has received a complete set of chromsomes. The DNA in each chromosome unwinds into a long thin thread so that genes can become active and give the instructions for making proteins.

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.

Each member of a class sampled a piece of ptc testing paper. thirty people sampled the chemical. twenty persons were tasters. how many had heterozygous genes? 10 20 0-20 indeterminate