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What is a recurring pattern in DNA with a 3 dimensional structure called?
motif
What does 40 cycles mean?
In the context of PCR (polymerase chain reaction), "40 cycles" refers to the number of times the amplification process is repeated. Each cycle consists of denaturation, annealing, and extension steps, allowing the target DNA to be exponentially amplified. Generally, more cycles lead to increased DNA yield, but after a certain point, the reaction may reach a plateau where additional cycles yield diminishing returns. In quantitative PCR, the cycle number at which a detectable signal is first observed can also indicate the initial amount of target DNA.
What is the function of the chromatain?
The chromatain have four major functions. They package DNA into a smaller volume to fit in the cell. They strengthen the DNA to allow mitosis, and they prevent damage to DNA. Chromatain control gene expression and DNA replication.
What does the Pentagon represent in a DNA picture?
In a DNA picture, a pentagon often represents a specific structural element, such as a sugar molecule in the DNA backbone. DNA is composed of nucleotides, which include a phosphate group, a sugar, and a nitrogenous base. The pentagon symbolizes the five-carbon sugar (deoxyribose) that is integral to forming the DNA structure. Thus, the pentagon visually highlights the molecular architecture that supports genetic information.
What are four charactoristics of eubacteria?
eubacteria lack a nucleus, lack histones in their DNA, have no membrane bound organelles, and their DNA is in a circular form.
How did Watson and Crick determine the three dimensional of DNA?
Watson and Crick used Franklin and Goslingâ??s â??Photo 51â?? to determine the three-dimensional shape of DNA. â??Photo 51â?? is the X-ray diffraction image of DNA that shows the pattern of DNA structure.
How did Watson and Crick determined the three-dimensional shape of DNA?
Watson and Crick used Franklin and Goslingâ??s â??Photo 51â?? to determine the three-dimensional shape of DNA. â??Photo 51â?? is the X-ray diffraction image of DNA that shows the pattern of DNA structure.
What role did xray photo of DNA play in the discovery of DNA structure?
The X-ray photo of DNA taken by Rosalind Franklin provided crucial evidence for the structure of DNA. It showed a distinctive X-shaped pattern, suggesting a helical structure. This data was key for Watson and Crick to propose their double helix model of DNA.
How is the chromosomes in the eukaryotes different from the structer of chromosomes in prokaryotes?
in eukaryotic chromosomes it produces DNA to live and in prokaryotic chromosomes it is nothing but bacteria.
What was the significance of Photo 51 in the discovery of the structure of DNA?
Photo 51, taken by Rosalind Franklin, provided crucial evidence for the double helix structure of DNA. It showed a distinct X-shaped pattern, indicating a helical structure. This image was used by James Watson and Francis Crick in their model of DNA, leading to the groundbreaking discovery of the DNA structure.
What is the significance of Franklin's Photo 51 in the discovery of the structure of DNA?
Franklin's Photo 51 was a crucial X-ray image that provided key insights into the structure of DNA. It showed a distinct X-shaped pattern, suggesting a helical structure. This image, along with other data, helped Watson and Crick develop their double helix model of DNA. Franklin's contribution was essential in shaping our understanding of DNA's structure.
What did the pattern of the X-ray photo of rosaland Franklin tell Watson and crick about the structure of DNA?
The X-ray photo of DNA taken by Rosalind Franklin revealed a distinct X-shaped pattern indicating a helical structure. Watson and Crick used this data to deduce that DNA is a double helix with two anti-parallel strands held together by hydrogen bonds between the base pairs. This insight was crucial in determining the structure of DNA.
When did Rosalind Franklin take photo 51 during her research on DNA structure?
Rosalind Franklin took photo 51 in May 1952 during her research on DNA structure.
How to interpret DNA gel electrophoresis results?
To interpret DNA gel electrophoresis results, analyze the bands on the gel. The size of the DNA fragments can be determined by comparing them to a DNA ladder with known sizes. The intensity of the bands can indicate the amount of DNA present. Additionally, the pattern of bands can reveal information about the genetic material being studied.
What was photo 51 significance in the discovery DNA?
Photo 51 is a critical X-ray diffraction image of DNA taken by Rosalind Franklin in 1952. It provided key insights into the helical structure of DNA, revealing its dimensions and helical pattern, which were crucial for understanding how genetic information is stored and replicated. This image ultimately contributed to James Watson and Francis Crick's development of the double helix model of DNA, marking a significant milestone in molecular biology and genetics.
What did Rosalind Franklin's famous Photo 51 reveal about the structure of DNA?
Rosalind Franklin's Photo 51 revealed the helical structure of DNA, specifically showing the double helix shape of the molecule.
Which pair supplied the X-ray diffraction photo of DNA?
The X-ray diffraction photo of DNA, famously known as Photo 51, was supplied by Rosalind Franklin and her graduate student Raymond Gosling. This image was crucial in revealing the helical structure of DNA. It was later used by James Watson and Francis Crick in their development of the DNA double helix model, although they did not initially credit Franklin's contributions.
