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vodka [1.7K]
4 years ago
8

The double helix structure, DNA, wasn’t discovered until 1953. Can you name any other discoveries made in the last hundred years

that have had an impact on our knowledge about life as much as the discovery of DNA? What are some notable scientists that have made major discoveries in the fields of life science?
Biology
1 answer:
gizmo_the_mogwai [7]4 years ago
5 0

Answer: Dr Akilu

Explanation:

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What is the unknown substance? Be sure to explain how you know
Lera25 [3.4K]

Answer:

The last one

Explanation:

All other substances use their chemical name, not a generic name like the last one

3 0
3 years ago
What is a characteristic of an agnostic interaction
Viktor [21]
I believe its aggression?

7 0
4 years ago
In pea plants, round seeds are dominant to wrinkled seeds. If you cross two heterozygous plants, what would your ratios be for g
Mila [183]

Answer:

Genotype - RR - 25%, Rr - 50%, rr - 25% (1:2:1)

Phenotype - Round seeds - 75%, Wrinkled seeds - 25% (3:1)

Explanation:

Let the letter "r" stand for the alleles, where R is round seeds and r is wrinkled seeds. A genotype is an individual's genes represented through alleles. Phenotypes are how the genes express themselves. In other words, genotypes will be written using letters, the alleles, and phenotypes will be the possible outcomes of the alleles.

To find the ratios/percentages of the genotypes and phenotypes you can use a punnet squares. Both of the parent seeds have the genotypes Rr and the phenotype of round seeds.

If you create punnet square (which had four boxes in total) 1 will have RR, 2 will have Rr, and 1 will have rr. These are the ratios for the genotypes. Each box represents 25%, so the percentages will be 25, 50, and 25. Finally, 3 of these boxes (RR and Rr) will result in round seeds because those are domiant. Only the genotype rr will result in wrinkled phenotype. Therefore, the ratio is 3:1 or 75% to 25%.

5 0
3 years ago
In humans, adult brain cells called neurons are terminally differentiated. This means that they are completely mature and no lon
antiseptic1488 [7]

The answer choice above which best describes how the cell cycle relates to neurons is:

Neurons do not go through M phase.

Option a is the correct answer

<h3>What is a neuron?</h3>

A neuron is defined as structural and functional unit of the nervous system

Complete question:

In humans, adult brain cells called neurons are terminally differentiated. This means that they are completely mature and no longer undergo the cell cycle.

Which of the following statements best describes how the cell cycle relates to neurons?

a. Neurons do not go through M phase.

b. Neurons passes through the M phase

c. None of the above

So therefore, the answer choice above which best describes how the cell cycle relates to neurons is:

Neurons do not go through M phase.

Learn more about neurons:

brainly.com/question/11538106

#SPJ1

7 0
2 years ago
Saddle joints have concave and convex surfaces. Name the two bones of the hand that articulate to form a saddle joint. A. The tr
Sunny_sXe [5.5K]

Answer:

Option (A).

Explanation:

Saddle joint is a type of synovial joint and also known as sellar joint. These joints are present in thumb, shoulder and inner ear.

The bone has one part concave inward and other part is convex outward. This bone can articulate with thumb's metacarpal and trapezium of the carpal bone. Saddle joints show abduction and adduction movements.

Thus, the correct answer is option (A).

6 0
4 years ago
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