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GarryVolchara [31]
1 year ago
14

How DNA polymerase, the double helix structure of DNA, and the base-pairing rules work together to produce two identical copies

fo the original DNA molecule
Biology
2 answers:
qaws [65]1 year ago
8 0

Answer:

The identical copies of DNA are produced through a process called DNA replication which takes place through S phase of the cell cycle. DNA replication is an enzyme-mediated process like DNA helicase, primase, polymerase which also uses ATP.

Double helical structure: both the strands of DNA acts as a template for the synthesis of new strands where one acts as a leading strand(3'→ 5') and one acts as lagging strand (5'→3').

DNA polymerase: Binds to the unwinded DNA after the action of helicase and adds nucleotides to the growing DNA chain using ATP. It also exhibits a proofreading mechanism.

Base-pair rule: Given by Chargaff, stated that adenine binds to thymine and guanine binds to cytosine in the complementary strand.

Contact [7]1 year ago
5 0
DNA structure, function and replication. DNA is a long molecule that consists of two strands of nucleotides twisted together in a long spiral called a double helix, the base-pairing rules describe which bases pair together in a DNA double helix, work together to produce two identical copies of the original DNA molecule=DNA structure; DNA funcution; RNA; replication; transcription; translation; the two strands are wound round each other to form a double helix. The two strands. Are joined together by hydrogen bonds between the bases, before every cell divison, so that one identical copy can go to each daughter cell =because the two strands of a DNA molcule have complementary base pairs, the nucleotide each can be used as a pattern or template to produce a complementary strand together then form a new DNA double helix, identical to the orginal. The enzyme DNA polymerase then moves along the exposed DNA strand
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A. the two genes on chromosome 1 are more than 50 mu apart.

Explanation:

Two or more genes present on the same chromosomes are the linked genes. Linked genes do not assort independently and do not exhibit crossing over. Therefore, the linkage of genes results in deviations from Mendel's law of independent assortment. However, if the linked genes are present far from each other on the same chromosome, they may exhibit crossing over.

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Maggie's Plant Experiment In this exercise you will read the following scenario and identify the parts of the scientific method
ANTONII [103]

Answer:

Please find the identified steps of the scientific method below

Explanation:

A scientific method is a series of steps that aims at solving a problem. The steps in a scientific method include:

1. Making observation: In this experiment, Maggie observed when she read that some plants grow better if the soil is acidic. This is her observation that led to the scientific question: Do plants grow better in an acidic soil?

2. Formulating hypothesis: Hypothesis is a testable explanation to a problem. In this experiment, Maggie's hypothesis is; IF acid is added to the soil, THEN plants will grow better

3. Test hypothesis: the hypothesis is tested by conducting an experiment. In this case, Maggie places two geranium plants of the same size in two pots. Then she added a tablespoon of vinegar to one of the pots and allows the other grow normally without acid. The independent variable in this experiment is the vinegar added while the dependent variable is the height of the plants. The plant group with the vinegar is the experimental group while the plant group without vinegar is the control group. The constants of this experiment are same sunlight, same amount of water, same location etc.

4. Analyse data: The growth of the control and experimental plants were measured every week for five weeks by measuring their heights. The height (cm) of the plants with vinegar for the five weeks as as follows: 10.0, 12.4, 14.8, 18.0, 21.4 while the height in cm for the plants without vinegar for the five weeks is as follows: 10.0, 11.5, 13.0, 15.7, 17.8.

5. Conclusion: Based on the result, the plants exposed to vinegar grew better each week except week 1, which is the week they started. Hence, the hypothesis of this experiment will be ACCEPTED because the experiment proves it.

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