The purple spots on colorless background of corn kernels observed by barbara mcclintock were the result of <u>transposition of the Ds elements out of the color gene.</u>
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- Extrachromosomal loops that do not adequately mate with their homolog can be used to identify duplications and deletions during meiosis.
 
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<u>What is and example of a gene?</u>
- The definition of a gene is a unit on a chromosome that determines a specific trait in an organism, or a male's name.
 -  An example of a gene is a chromosome unit that determines a person's eye color.
 -  An example of a man named Gene is the actor Gene Wilder.
 
What are the 4 types of genes?
- There are four different chemical types: A, C, T, and G. 
 - A gene is a segment of DNA composed of an As, Cs, Ts, and Gs sequence.
 -  Every cell in your body contains about 20,000 of your genes due to how little they are.
 
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Answer:
C. Prevents sir pollution
Explanation:
Because when cars a running they produce fumes which pollute our air. Also that is a car electric charger
 
        
                    
             
        
        
        
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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Answer:
The early stages of embryo development in fish and humans look strikingly similar while insects develop very differently compared to both fish and humans,
Explanation:
It tells you that fish and humans have very similar embryo development (fetus development) while humans and insects develop very differently. Therefore, that supports the argument that humans are more like fish than insects.