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lukranit [14]
3 years ago
8

Who was responsible for "cracking the code" of DNA by establishing what amino acids are coded for by which codons, and when was

this accomplished?
Biology
1 answer:
Akimi4 [234]3 years ago
6 0

Answer:

The correct answer is- Nirenberg and Heinrich, 1961.

Explanation:

Experiments by Marshall Nirenberg and Heinrich Matthaei in 1961, began to decipher genetic codes and state about the 64 triplet codons in the genetic code by using mRNA from DNA to translate into specific amino acids in our biological system.

Their experiment helps to decode or crack the code of DNA by establishing the first codon out of 64 triplet codes which are  UUU codes for phenylalanine. In the future, the same approach is used to find other amino acids.

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This confused me.
KonstantinChe [14]
The answer is A, denature.

As each type of enzymes has its own optimum temperature, like the temperature that they work fastest at, so if the temperature goes too high above the optimum, the 3D structure of the enzyme breaks apart and deforms and they can no longer bind with substrates thus no longer works. In this scenario, we say the enzyme is denatured.

Note that only if the temperature is too high can make the enzyme denature, if the temperature is too low, instead, the enzyme would be inactive, but once the temperature goes back to normal, they work again. Unlike denatured enzymes, which does not work even if the temperature goes back to normal.
3 0
3 years ago
Most red deer who successfully reproduce have about four fawns during their lifetimes. However, a small percentage of red deer p
Rasek [7]

Answer:

Natural selection will favor red deer that produce a dozen or more offspring that survive for at least a year.

Explanation:

Natural selection results in adaptation, which means the increase of the aptitude phenotype.  Aptitude is the contribution of each genotype to the next generation.

Natural selection is the result between the individual phenotype and the environment that determines the destiny of genes. It is the differential capability of individuals to leave offspring.

Aptitude (or fitness) is the phenotype that results in the survival, fertility, and capability of having a mate. It is a way of measuring the individual ability to leave fertile offspring. Aptitude must be significant to the natural selection act in its favor.  

Natural selection, eventually, will favor red deer that produce a dozen or more offspring that survive for at least a year. These animals have more chances of leaving fertile descendants that will be able to grow, develop, survive, and reproduce. They have a higher aptitude than those individuals that only have four fawns during their lifetimes. These animals have fewer probabilities of leaving survival descendants able to reproduce.

3 0
3 years ago
What is a biogeochemical cycle
faltersainse [42]
A biogeochemical cycle is a pathway by which a chemical substance moves through both biotic and abiotic compartments of earth
5 0
3 years ago
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How to use a condom?​
klemol [59]

Answer:

Go to a sex clinic and ask if this is a personal enquiry or listen in your pshe lessons if you have them

Explanation:

4 0
3 years ago
Describe the relationship and differences between chromatin, chromosomes, and sister chromatids
PtichkaEL [24]
Chromatin is dna that makes a chromosome and chromosomes are different dna strands in a cell, sister chromatids are identical pieces of dna
7 0
3 years ago
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