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natita [175]
3 years ago
6

__________ is best defined as a sudden variation in an inheritable characteristic, as distinguished from a variation that result

s from generations of gradual selection.
Biology
1 answer:
Sloan [31]3 years ago
7 0

Answer: Mutation

Explanation: Mutation is a change in DNA sequence, it may occur due to error when the DNA is copied or it can arise from various environmental factors such as exposure to chemicals, UV radiation, Highly infectious microbes.

Mutation maybe spontaneous. Acquired mutations occur at some point in a person's life and are present only in certain cells, not in every cell in the body while some may target a tissue, an organ or an entire system.

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Who discovered the monomers of nucleic acids?
Kazeer [188]

Answer:

Phoebus Levene.

Explanation:

Two types of nucleic acids are DNA and RNA. The monomers of mucleic acid contains the pentose sugar, nitrogenous bases and the phosphate group attached with the bases.

Friedrich Miescher was the first scientists who discovered the nucleic acids. He identified the nucleic acids from the bandage that contains the nuclei of white blood cells. The new compounds discovered is known as nucleic acid. But the monomers of the nucleic acids was first explained by Phoebus Levene. Different forms of nucleic acid was also postulated by Phoebus Levene.

Thus, the answer is Phoebus Levene.

4 0
3 years ago
Read 2 more answers
) what foods have high levels of iron? look at the food pyramid; items in the meat group generally have a lot of iron.
Elis [28]
Surprisingly chocolate actually contains a fair amount of iron. Red meats are known to contain iron, one thing in particular is blood (yes that is sometimes eaten, and it contains a lot of iron). Such organs of animals that are high in iron include the spleen and or marrow. 

If you wish to go vegetarian red veggies tend to be high in iron, one in particular are beets (yes, i know, they aren't red until processed)
4 0
3 years ago
What are sister chromatids?
____ [38]

Answer:

hi how are you doing today Jasmine

3 0
3 years ago
In , mating partners come close to one another and release eggs and sperm.
marin [14]

But what is the question are you like not sure about it or what

7 0
3 years ago
Birds, insects, and many reptiles excrete nitrogenous waste in the form of uric acid, which _____. see concept 44.2 (page 980)
Nadusha1986 [10]
Birds, insects, and many reptiles excrete nitrogenous waste in the form of uric acid, which saves water. 
Nitrogenous waste in the body tend to form toxic ammonia, which must be excreted. Mammals such as human excrete urea, while birds, reptiles, and some terrestrial invertebrates produce uric acid as waste in the form of a white paste or power. The production of uric acid involves a complex metabolic pathway that  is energetically costly in comparison to processing of other nitrogenous wastes such as urea or ammonia, it has the advantages of reducing water loss and, hence, reducing the need for water.
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3 years ago
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