What enzyme works to add dna to ends of chromosomes in rapidly dividing cells such as those found in an embryo, to prevent genes from being lost during replication?

a. dna polymerase

b. histones

c. telomerase

d. chromatin

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

How many bones are there in the human body?

Match the order of the levels of organization in nature with the correct description. example: atoms are fundamental units of matter= level 1levels- 2,3,4,5,6,7,8.now what levels are these? population consists of organismscells consist of moleculesecosystems consist of communities interacting with there environmentmolecules consist of atomsthe biosphere consist of all ecosystems on earthcommunities consists of populationorganisms consist of cells