Each of these rod shaped structures has only 1 copy of the DNA A. chromatids
B. mutation
C. ribosome

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

One of the purposes of transcription is to produce a sequence of bases that

Pl which diagram illustrates prophase?