Answer: option d.hydrogen bonds between nitrogen base Pairs
Explanation:
DNA is called a Deoxyribonucleic acids, it contains hereditory information in the cell. DNA is located in nucleus of human cell. DNA consist of nucleotide strands that comprises of a sugar and oxyribose bound on a partto a phosphate group and bound on the other part to a nitrogenous base. The Nitrogenous base consist of Adenine, thymine, guanine and cytosine which are complementary base Pairs. They are grouped into 2 distinct classes called purines (double-ringed structures) and pyrimidines (single-ringed structures). The nitrogenous bases forms a ladder and pairs with bases on the other side commonly called rungs. Each complementary nucleotides purine with pyrimidine are held together by hydrogen bonds.A hydrogen bond is a known as chemical bond that is relatively weak and occurs only between hydrogen atoms along with or and electronegative atoms, e.g oxygen, nitrogen e.t.c. Hydrogen bonds usually occur in short length or distances and are formed quickly or easily and ca also broken.
you should
a. tie it back before performing lab work.
Using a Bunsen burner can cause your hair to loosen and ignite. Bring only your essentials to the lab. This means that all personal belongings such as bags and jackets should be kept outside. Long hair and loose clothing that can get caught in glassware or pose a danger in the laboratory should be withdrawn.
Wear proper clothing when working in the laboratory. Long hair, hanging jewels, loose clothing, and baggy clothing are dangerous in the laboratory. Long hair should be tied at the back. You need to secure the removed jewelery (if it's hanging long) and loose clothing. Shoes should completely cover your feet.
Learn about lab safety protocols here:brainly.com/question/8430576
#SPJ4
According to this problem, this is an example of complete dominance, so the dominant allele would be the allele that codes for physical trait for roundness of the seed.
So the cross would be like this:
W = allele for round seed
w = allele for wrinkled seed
P1 gen = ww • WW
F1 gen = Ww
Since all of the offspring are heterozygous the result is that the dominant allele suppressed the recessive allele for wrinkled seed.
I believe that its B but could also be D
Answer:
Low validity and low reliability.
Explanation:
Structured interview may be defined as a type of interview in which the interviewer has already decided the question. The questions are asked in the same series during the interview.
Diagnostician A has classified the individual as “odd” cluster. The Diagnostician B classifies an individual's personality as“dramatic” cluster. The structured interview has low reliability. The structured interview has low validity also as compared with other type of interview.
