Answer:
No 15N/15N labeled DNA was observed in second generation
Explanation:
Meselson and Stahl were doing an experiment to find out the semi-conservative mode of replication of DNA. The first cultured bacteria in 15N medium which was containing a heavy isotope of nitrogen. The DNA synthesized here had more density. After that they transferred the bacteria to the 14N containing medium. When bacteria reproduced and new strands of DNA were synthesized, they observed the following -
- The first generation had hybrid DNA with 15N/14N strands
- The second generation had both hybrid 15N/14N DNA and 14N/14N DNA strands
- There was no 15N/15N DNA observed.
In this way they proved that one strand of DNA is kept conserved during the replication.
Answer: The answer is Core Samples, Earthquakes, S waves, and Rock composition.
Explanation:
It’s talking about study the whole interior of Earth not just one part el to learn about the Earth they have to study the rocks. The waves allow us to know whether or not the the outer core is liquid I believe. The Earthquakes shake the Earth allowing us to get new rocks. Rock composition helps us to be able to know what our old Earth was like and when they were deposited. And Core samples allow to be able to see the temperature of the core and such things.
Answer:
31%
Explanation:
Chargaff's law says the amount of A (adenine) = T (thymine) and G (guanine) = C (cytosine). If
G = 19% then C= 19%
19% + 19% = 38%
100% - 38% = 62%
62% for A and T
Divide by 2 and you get
31%
The genotype of the of other plant could be: YY or Yy
Answer;
-Cell division
Explanation;
-Glandular epithelium is such type of a tissue that is responsible for the formation of glands. It is a type of striated epithelial tissue that covers the organs associated with secretion. Glandular epithelium forms the covering of all major glands. It is also present in the intestinal lining.
-Cells are regenerated by division in the basal layer and migrate toward the apical surface to replace cells lost by fragmentation. Cell division is indicated by the mitotic phase, cells located in the deepest basal layer of the glandular epithelium.
