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uysha [10]
3 years ago
5

How did rosalind franklin contribute to determining the structure of dna?

Biology
1 answer:
zubka84 [21]3 years ago
4 0
Rosalind franklin used x-ray crystallography to determine that dna was double stranded 
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Nondisjunction that occurs during meiosis II produces what?
natita [175]

Answer:

Both of these daughter cells will then go on to divide once more in meiosis II, producing 4 daughter cells, 2 with n+1 and 2 with n-1. Nondisjunction in meiosis II results from the failure of the sister chromatids to separate during anaphase II.

5 0
3 years ago
Why do animals exist in various species
Lady_Fox [76]
Evolution. over time animals have evolved unique traits that make them distinct from other species.
7 0
2 years ago
What pressure, in atm, will be exerted by 8 moles of a gas at 300
Alchen [17]

Answer:

3.94 atm

Explanation:

Using the general gas law equation as follows;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the information provided in this question;

P = ?

V = 50 L

T = 300K

n = 8 mol

Using PV = nRT

P = nRT/V

P = (8 × 0.0821 × 300) ÷ 50

P = 197.04 ÷ 50

P = 3.94 atm

6 0
3 years ago
Agrobacterium infects plants and causes them to form tumors. You determine that tumor formation requires a large amount of the p
lianna [129]

Answer:

<em>Agrobacterium</em> <em>tumefaciens</em> is a gram negative bacteria that is responsible for tumor formation in the different parts of plant body.

Explanation:

It causes crown-gall disease in plant body by transferring it's DNA into the plant body which include Ti plasmid.

There are 3 types of bacteria that form tumor in different plant ares.

<em>Agrobacterium rhizogenes</em>,<em> Agrobacterium tumefaciens</em> strains contain either Ti or Ri plasmid but <em>Agrobacterium vitis</em> contain only Ti plasmid   which are virulent.

The transfer of T-DNA takes place into the body of host cells and then the DNA is expressed into the body of the host and thus forming gall or tumor.

8 0
3 years ago
A plant seedling bends toward sunlight because _____.
olga2289 [7]

Answer:

Light is sn important element in the growth of a plant.

Explanation:

Light is an important factor influencing plant growth. It is a common observation that plants grow towards light. Charles Darwin and his son Francis Darwin first observed that the coleoptiles of canary grass responded to unilateral illumination by growing towards the light source (phototropism). After a series of experiments, it was concluded that the tip of coleoptile was the site of transmittable influence that caused the bending of the entire coleoptile due to more growth on the dark side. That transmittable influence is now thought to be the phytohormone called auxin.

END of the answer.

Dear learner I can further assist with your homework should need be and I am available on plus one six one nine five five eight two one four zero.

3 0
3 years ago
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