x-ray diffraction photographs by wilkins and franklin suggested that

X-ray diffraction photographs by Wilkins and Franklin suggested that the structure of the DNA, and from the X-ray crystallography, the DNA double helical structure was established.

X-ray crystallography helped to observe the DNA, and the image was taken by the scientist Rosalind Franklin. These X-ray crystallography images provided evidence for the double helix model proposed by Watson and Crick and helped in the understanding of genetics. After that, this is used in molecular biology, medicine, biotech, etc. to get a better cure.

Hence, x-ray diffraction photographs by Wilkins and Franklin suggested that the structure of the DNA, and from the X-ray crystallography, the DNA double helical structure was established.

Learn more about X-ray crystallography here.

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What is the difference between the revolution and rotation of the Earth and the revolution and rotation of moon

6. Which of these BEST describes our current understanding about how species evolve over time?

A) As organisms use certain traits more frequently, each organism evolves over time.

B) Populations of organisms evolve rapidly due to genetic changes brought about by random mating patterns.

C) Traits that result in a greater number of mutations occur more frequently, causing the population to evolve.

D) Populations evolve as natural selection results in a change in the frequency of alleles within the population over time.

7) A change in a sequence of DNA bases in a bacterial cell has resulted in a mutation. This mutation has increased the ability of the bacteria to break down and digest organic molecules in the environment. Bacteria with this mutation are better able to find and utilize food sources. According to the theory of natural selection, what is MOST likely to occur in future generations of this bacteria?

A) The relative frequency of the mutation will increase as time passes.

B) Because the mutation has changed the DNA of the bacteria, a new species will be formed.

C) Because the mutation is abnormal, the mutation will become more rare with every passing generation.

D) Bacteria with the mutation will increase in number until the food supply is exhausted, causing the bacteria to become extinct.

HELP PLEASE!!!!!!


In the United States, less than 0.8% of the population has type I diabetes. Which of the following facts supports the theory that a person's risk of developing diabetes has a genetic, inherited component?
A. If one parent has type I diabetes, each child's chance of developing diabetes is between 1% and 6%.
B. If one identical twin has diabetes, the other twin has a 50-75% chance of having diabetes.
C. If both parents have type I diabetes, each child's chance of developing diabetes is between 10% and 25%.
D. all of these

The germ theory of disease states that many diseases are caused by the presence and action of specific

Commercial fishing in certain parts of the ocean decreases the number of small fish. As a result, large fish and sharks...
are negatively affected because there is less oxygen in the water.


are positively affected because the small fish polluted the water.


are negatively affected because they feed on the small fish.


are positively affected because there is more space.

HELP ME ASAP!!!!!!!!

Assignment: Using Punnett Squares Exploration

First Cross





















Genotypic ratio:
Phenotypic ratio:


Second Cross





















Genotypic ratio:
Phenotypic ratio:
Third Cross





















Genotypic ratio:
Phenotypic ratio:



Questions
1. What conclusions can you draw about the results of your first cross between a homozygous red bull (RR) and a heterozygous red cow (Rr)?






2. What conclusions can you draw about the results of your second cross between a heterozygous red bull (Rr) and a heterozygous red cow (Rr)?






3. What conclusions can you draw about the results of your third cross between a homozygous white bull (rr) and a homozygous white cow (rr)?

Using the periodic table and your knowledge of atomic structure. Compare the number of electrons in a Carbon-12 and Carbon-14 isotope.

During which process is mRNA converted into a sequence of amino acids for protein production?

Four groups of mice consume different amounts of sweetener in their food. The control group is the one that receives ____.

1. In pea plants, purple flower color is dominant to white flower color. If a homozygous dominant flower mates with a white flower, what is the chance of having white flowered offspring?

Name 5 things our atmosphere does for us

Which of the following was determined by Charles Darwin but based on contributions from another scientist

A. Species can go extinct during catastrophes

B. Species could go extinct when their environment changed if they could not adapt to the change

C. The population can increase faster than the food supply

D. The processes that change organisms work quickly and have only been around for a short time

4). A particular bird species found in North America obtains most of its food energy by catching and eating insects. A mutation arises in this bird population that increases the length of its beak. Although many mutations are harmful, this particular mutation has increased the ability of the bird to catch and eat certain insects. Which of these is the MOST LIKELY outcome of this mutation?

A) The insects that are eaten by this bird are likely to become extinct.
B) Sharp pointed beaks will result in the birds eating other more unusual food items.
C) Other bird species will be more likely to also develop pointed beaks in order to compete.
D) Individual birds with the mutation will be more likely to survive and reproduce than birds without the mutation.

5). In 1831, Charles Darwin visited the Galapagos Islands. While observing the giant land tortoises that lived on these islands, Darwin noted that the shape of the tortoise shell varied depending on which island the tortoise lived. Tortoises on one island had round shells, for example, whereas tortoises on a neighboring island had more flattened, saddle-shaped shells. Which statement BEST summarizes Darwin's explanation for these differences?

A) Random mutations caused the shape of the shells to fluctuate periodically.
B) The shape of the tortoise shell varied because the predators on the islands were all similar.
C) The particular shape of the shell was best suited for the island on which the tortoise was living.
D) Tortoises who used their shells in special ways caused the shells to become larger, rounder, or flatter.

Which statements accurately describe matter? Check all that apply. Only living things are made up of matter. Matter is made up of tiny particles called atoms. Atoms were discovered in the twenty-first century. Atoms cannot be divided. A single atom can be seen only with a standard microscope.

Organisms belonging to the Kingdom Eubacteria, Kingdom Archaebacteria, and some organisms in the Kingdom Protista are unicellular. What is it that places them into different kingdoms?

Which planet most resembles Earth in terms of all of the factors: temperature, gravity, atmosphere, and water?

Some traits, such as earlobe attachment, blood type, and the presence or absence of dimples, have limited variation throughout the human population because they are controlled by a single gene. Other traits, such as skin color and human height, are widely variable throughout the human population because

after being vaccinated, many children are treated for fever. this is not considered a danger or harm. why might this happen?

A liver cell must create a protein to carry fats through the body. Where would the instructions be found?

A) Brain

B) Nucleus

C) Hormone

D) Enzyme

A gene is a region of DNA that contains instructions for the manufacture of?

xplain how the study of taxonomy helps other scientists.

Farmers in areas where there are no major rivers still require water for their crops. Where do these farmers most likely obtain the water needed for their crops? Question 11 options: 1) nearby oceans 2) melting ice 3) morning dew 4) underground sources

Describe the mass and surface temperature of the main sequence stars.

Explain why crops in the Arctic grow larger than normal during the summer months.

can you list six physical properties

and 2 chemical properties of this picture Hurryy!!

Write a series of paragraphs that shows your knowledge of the following: the biochemical structure of DNA, how DNA replicates, how the DNA structure forms the genetic code, and how that genetic code comes to be expressed as a phenotype.

Colliding air masses can form a weather front. Which of the following is not a type of front:
2 points
A Stationary Front
B Storm Front
C Cold Front
D Occluded Front

How do the main sequence stages of these two sizes of stars differ?

Describe what is happening in each stage and what each stage looks like:

Prophase

Prometaphase

Metaphase

Anaphase

Telophase

Cytokinesis


Describe the purpose of mitosis.

Which of the following best describes our MRNA is produced?