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DaniilM [7]
3 years ago
10

Use the drop-down menus below to match the scientist(s) to their contribution to the discovery of base pairings. studied the rol

e of RNA in protein synthesis, specifically in the bacteria E. coli. created an accurate model of the structure of DNA. proposed the polynucleic model, stating that DNA and RNA were composed of nucleotides. concluded that, in DNA, adenine levels were equal to thymine levels and cytosine levels were equal to guanine levels.

Biology
2 answers:
marshall27 [118]3 years ago
8 0

Answer:

1-Nirenberg and Matthaei

2-Watson and Crick

3-Levene

4-Chargaff

Explanation:

victus00 [196]3 years ago
3 0

Answer:

Check the pic

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To be injured by an animal with poisonous spines, you must: Select one: Be within a radius of 3 m/10 ft, as most poisonous anima
Mama L [17]

To be injured by an animal with poisonous spines, you must: be the aggressor and touch the animal first.

<h3>What is the use of spines in animals?</h3>
  • Spines are hard, needle-like anatomical structures found in both vertebrate and invertebrate species.
  • The spines of most spiny mammals are modified hairs, with a spongy center covered in a thick, hard layer of keratin and a sharp tip.
  • Spines on an animal’s body help defend it.
  • They can be irritating or painful, or difficult to swallow.
  • Spines are also important tools for communication, shock absorption, and rain protection.
  • Animals like porcupine shoot their spines (quills) for defense. Some spines can also pass through gloves.
  • To prevent attacked by an animal with poisonous spines you must remain calm and observe your surroundings.

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7 0
2 years ago
Matings between individuals from the two populations of Rhagoletis produce hybrid flies that appear to be healthy and have norma
Mama L [17]
<h2>The correct answer is : C.</h2>

Explanation:

  • According to the question, mating between two populations of Rhagoletis produce hybrid flies.
  • This means that the two population is present in the same habitat or locality, hence they are capable of coming in contact with each other and mate. Hence, the answer cannot be Habitat Isolation.
  • Mating produces hybrid flies. This is possible when the gametes (egg and sperm) of the two different populations are capable of capable of coming close to each other and undergoing fusion (fertilization). Hence, there is no Mechanical Isolation.
  • The zygote formed by the above fertilization is capable of developing into healthy hybrid flies with normal life span. Hence, Pre-zygotic Isolation is absent.
  • But the hybrid flies formed are sterile and not fertile, that is, they are incapable of producing viable gametes which can undergo fertilization and produce a new offspring.Therefore, the eggs laid by the hybrid flies hatch less often. Hence, there is existence of Reduced hybrid fertility.
8 0
3 years ago
What's the difference between transcription and translation?
sveta [45]

Answer:

Transcription is the synthesis of RNA from DNA. Occurs in the nucleus.

Translation is the synthesis of a protein from RNA. Occurs in the cytoplasm.

Explanation:

pls mark me brainliest

3 0
3 years ago
How does the brain control the endocrine system?
Makovka662 [10]
As the head organ in the body which controls, monitors, supervises and influences the different organ system in the body and of the individual -characteristics, personality, traits, cognition, perception, intelligence, sensation and motor responses. The brain controls the endocrine system by its part, located somwhere in the medial temporal lobe called the hypothalamus, the master gland of the body. The hypothalamus influences every gland secretion and hormonal function that preceeds and proceeds in the body of an organism -growth, drives, sex, survival and etc.

The hypothalamus sends sgnals from the different gland organs in the body that either exhibits or inhibits the activity of that particular gland releasing hormone.
7 0
3 years ago
What kind of molecule is formed when many disaccharide molecules are combined?
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Starch and  Cellulose is formed when many disaccharide molecules are combined
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4 years ago
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