Histones are the proteins involved in the packing of DNA in eukaryotes. They are positively charged proteins and are not found in bacteria. To analyze the evolutionary relationship in a gene between eukaryotes and bacteria, one must choose the gene present in both of them. The tRNA, rRNA and hexokinase encoding genes are common to both bacteria and eukaryotes. Therefore, one of these genes may be chosen for the study. However, histone encoding genes are not present in the genomes of bacteria. Therefore, the study of the histone encoding gene would not be useful for the mentioned purpose.

8 0

3 years ago

Complete the concept map below to describe steams and river systems. Use the following terms in your concept map: braided stream

larisa [96]

Here are the answers.

1. Runoff from the land in a stream’s watershed……….

2. And water from its tributaries.

3. At the stream’s headwaters, the gradient………..

4. The greater the water speed, the larger the stream load………..

5. Which is made up of: a) suspended load, b) dissolved load, c) bed load

6. Under these conditions a braided stream may form

7. Where gradient flattens, a meander may form

3 0

2 years ago

Whaich type of soap removes more grease, dish soap, hand soap, shampoo procedures

gladu [14]

Dish soap- the molecules that make up the soap are more specifically designed to break down grease

5 0

2 years ago

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