What are the two identical strands of a chromosome called?

A. centromeres

B. centrioles

C. spindles

D. chromatids

At the end of dna replication how are the 2 new molecules the same

How is diversity related to changes in ecosystem?

Which element does a protein have which the other macromolecules usually does not

A black guinea pig with smooth fur was mated with an albino guinea pig that had rough fur. All their offspring were black and had rough fur. What are the genotypes of the parents?

All or none principle of skeletal muscle contraction states that

What covers the ends of bones in adults? A blood B cartilage C marrow D ligaments

If gene expression control occurs during transcription, when did it occur?

If selfing starts in a previously randomly mating population composed of 0.50 heterozygotes, what is the frequency of heterozygotes after three generations of selfing

The movement of a bird away from a grass fire is caused by A) receptors initiating a stimulus B) impulse forming in a muscle tissue C) muscles responding to a stimulus D) effectors synthesizing neurotransmitters

What does a reflectd light look like