1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ANTONII [103]
3 years ago
10

Which of the following can be determined directly from X-ray diffraction photographs of crystallized DNA?

Biology
1 answer:
nordsb [41]3 years ago
6 0

Answer:

A) the diameter of the helix

Explanation:

This is was measured during  the 3D  structure of DNA proposed by James Waston and Francis Crick in 1953. The x-ray  diffraction showed crossed shape of the X-ray films.The DNA appeared as two double strands structure.

The diameter of the DNA double helix is 20 Armstrong.

This  diameter is constant  because of the complementary pairing of bases.( purines with pyrimidines)

You might be interested in
Which of the following occurs during artificial selection, but not during natural selection? A. Selection pressures result in on
Tema [17]
D. This is because artificial selection is basically the human breeding of plants or animals, and we do so in a way to bring forth the best traits to solve a problem or create a better product.
Hope this helps!
7 0
3 years ago
Read 2 more answers
A cell created by cloning is genetically
Mama L [17]

Answer:

A) identical to its parent

Explanation:

It was produced through asexual reproduction.

7 0
3 years ago
Two cars are on a track and accelerate to 60 mph. At a certain point, both crs slam on the brakes. The distance it takes for eac
Viktor [21]
B. Independent meaning by itself. Dependent meaning together, or not by itself, and since both are going 60mph and they both stop it’s dependent because they’re depending on each other to stop.
6 0
2 years ago
Read 2 more answers
For a pair of genes with alleles: A (dominant) a (recessive) at the first locus; and B (dominant) b (recessive) at the second lo
Harlamova29_29 [7]

Answer:

E. 1/16

Explanation:

In a duplicate dominant epistasis, when one locus presents a dominant genotype and the other presents a recessive genotype, the dominant one hides the effective of the recessive gene. Therefore, a recessive phenotype will only be observed when both genes are recessive homozygous (aabb).

Assuming a doubly-heterozygous mating (AaBb x AaBb), the probability that both genes are recessive homozygous is:

P=\frac{1}{2}*\frac{1}{2}*\frac{1}{2}*\frac{1}{2}\\P =\frac{1}{16}

1/16 of offspring are expected to show the recessive phenotype.

8 0
3 years ago
Compare the role of vacuoles and lysosomes in a cell
Nikitich [7]

Explanation:

Vacuoles control water, while the lysosomes destroy ill cells.

Explanation:

1. The vacuoles are osmoregulatory organ of the cells. It also determines the rigidity of the cells by absorbing water content. Mature plant cells are full of the vacuoles. 2 .The lysosomes are known as the 'suicidal bag'. It destroys its own ill cell. The digestive enzymes of the lysosomes digest the whole cell during the illness. It protects from the bad effects of the dyeing cells. Thank you

8 0
2 years ago
Other questions:
  • The ability of the brain to adapt during childhood is referred to as:
    5·1 answer
  • As blood enters the ____________ , the walls of these vessels expand and contract, which can be felt as the pulse where the ____
    13·1 answer
  • Please help
    15·1 answer
  • What is the shape of an mRNA?
    13·1 answer
  • Which of the following is considered abiotic?
    14·2 answers
  • The discovery of cells is most directly linked to the
    7·1 answer
  • Botulism is a disease that causes vomiting, stomach pain, coughing, and muscle weakness. What systems would be most affected by
    5·2 answers
  • What is a specialized cell? Give an example.<br> What does it mean when cells differentiate?
    14·1 answer
  • Why did Mendel choose pea plant for his experiment ?<br>I need answer for 5 points..please..help me​
    15·2 answers
  • Score 5
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!