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diamong [38]
3 years ago
11

A researcher was studying mutations in bacteria. He found that certain bacteria had changes in their DNA that allowed them to be

Biology
2 answers:
Sonbull [250]3 years ago
5 0

Answer:

evolutionary genetics / all the bacteria becoming resistant to the specific antibiotics

Explanation:

Took the test

Dmitry [639]3 years ago
3 0

Question is incomplete. Complete question is as follows:

A researcher was studying mutations in bacteria. He found that certain bacteria had changes in their DNA that allowed them to be resistant to antibiotics. This research is an example of 1._______The mutation will lead to 2.________.

1.

A.Embryology

B. Evolution Genetics

C.Comparative Anatomy

2.

A. All the bacteria becoming resistant to the specific Antibiotics

B. The Bacteria becoming nonresistant to specific Antibiotics

C. Less Bacteria becoming resistant to the specific Antibiotics

Answer:

1. B. Evolution Genetics

2.C. Less Bacteria becoming resistant to the specific Antibiotics

Explanation:

Evolution genetics is the field in which evolutionary changes in genome are studied. Here, the bacterial population was exposed to the antibiotic. In response, some bacteria showed mutations in their genome which made them resistant to the antibiotic. Since the genetic composition of bacteria has changed and made them to evolve, it would be a part of evolution genetics.

The fewer bacteria which showed these mutations became resistant to that particular antibiotic. However, this does not mean that the entire population will become resistant to the antibiotic. It is going to take a long time.

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sciencebiologybiology questions and answersConcentration Of NAD+ (umol/L) 4 8 12 16 20 Concentration Of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH...

Question: Concentration Of NAD+ (umol/L) 4 8 12 16 20 Concentration Of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH 4 8 12 16 20 Time (weeks) Figure 2. The Concentration Of NAD* (top) And Lactic Acid (bottom) In The Blood Of A Representative Treated Individual (a) Describe The Pattern Of Inheritance That Is Most Likely Associated With A Mutation In The MT-ND5 Gene. ...

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Concentration of NAD+ (umol/L) 4 8 12 16 20 Concentration of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH 4 8 12 16 20 Time (we

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Concentration of NAD+ (umol/L) 4 8 12 16 20 Concentration of Lactic Acid (mmol/L) OHHHHHHHHHHHHHHHHHHHH 4 8 12 16 20 Time (weeks) Figure 2. The concentration of NAD* (top) and lactic acid (bottom) in the blood of a representative treated individual (a) Describe the pattern of inheritance that is most likely associated with a mutation in the MT-ND5 gene. Explain why individuals are not typically heterozygous with respect to mitochondrial genes. (b) Identify a dependent variable measured in the researcher's experiment. Identify one control that the researcher could use to improve the validity of the experiment. Justify the researcher analyzing blood samples at many intermediate time points instead of at only the beginning and the end of the 20-week period. (c) Describe the relationship between the concentration of NAD in the blood and the concentration of lactic acid in the blood during the first 5 weeks of treatment with the vitamin. Based on Figure 2, calculate the average rate of change in blood NAD concentrations from week 5 to week 17. (d) The researcher performed a follow-up experiment to measure the rate of oxygen consumption by muscle and brain cells. Predict the effect of the MT-ND5 mutation on the rate of oxygen consumption in muscleand brain cells. Justify your prediction. The researcher had hypothesized that the addition of the vitamin that is similar in structure to NADH would increase the activity of the mutated NADH dehydrogenase enzyme in individuals

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