Which of these are joined at the centromere?

DNA

RNA

Ribosomes

Chromatids

If you have true breeding strains that differ only in a single character, how could you determine which trait for that character is dominant?

Red-green color blindness is an X-linked recessive disorder. A woman with normal vision whose father was colorblind has children with a man with normal color vision.

Hybrids formed by mating two different species are often incapable of reproducing successfully with each other or with the members of their parent populations. Explain why this is the case.

Which of the following is true about mixtures and compounds? A. A mixture contains different substances that are not chemically combined with one another. B. Mixtures and compounds are both made of two or more different substances. C.

When dna is coiled, folded, and twisted into short condensed strands, it is called?

Movement of molecular oxygen (O2) and carbon dioxide (CO2) across the cell membrane Choose one: A. occurs only unidirectionally, such that oxygen is allowed to enter and carbon dioxide (waste) is able to leave. B.

3 physical characteristics of humans affected by the environment?

What is indirect competition in biology terms

A muscle cramp is most likely due to lack of A) ATP. B) ADP. C) actin. D) myosin. E) acetylcholine.

Why is speech the easiest modality for communication?