You only want to express the genes that are necessary. You only need to make the needed proteins, and it also conserves resources.
Your answer should be A. 20%
Hope this helped.....:) :D
Answer:
The correct answer will be option-about 174 base pairs of DNA are wrapped around an octamer of histone proteins.
Explanation:
A nucleosome is the fundamental unit of the chromatin thread polymer of DNA which is made up of a nucleosome core. The nucleosome core is composed of histone proteins H2A, H2B, H3, and H4 arranged in two copies forming an "octamer structure of proteins".
About 174 bp of DNA wraps around this nucleosome which is connected to other nucleosomes through 160 to 240 bp linker DNA.
Thus, the selected option is the correct answer.
Answer: The correct answer for the fill in the blank is D) Esophagus.
The digestive system is comprised of the gastrointestinal tract ( GI tract) and the accessory organs like liver, pancreas, and gallbladder.
The GI tract starts from the mouth and ends in the anus. This is a long twisting tube in which the hollow organs are joined. The hollow organs which are the part of the GI tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus.
Food travels from the mouth to the stomach via a hollow tube-like structure which is called as Esophagus. Food is swallowed through the esophagus with the help of muscular movements called as peristalsis.
Answer:
By running them under water. The water will separate the rocks from the dirt.