The relationships between DNA, chromosomes, genes, alleles and their roles in heredity.

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?

To be or not to be that is da question

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit