Answer:
C. Diploid condition
Explanation:
A Karyotype is the pictorial display that shows chromosome arrangement and number in a cell. The Karyotype shows any abnormalities in the nuclear material (chromosomes). In a carrot plant that was cloned from carrot root, the clones should possess the same features as the original plant. 
A Karyotype of both plants i.e. clone and the original plant should show that their cells have a diploid number of chromosomes i.e. Two sets of chromosomes. Since a carrot plant is a diploid organism.
 
        
             
        
        
        
Answer: Option B) phosphate; hydroxyl; 3' 
We identify nucleic acid strand orientation on the basis of important chemical functional groups. These are the phosphate group attached to the 5' carbon atom of the sugar portion of a nucleotide and the hydroxyl group attached to the 3'
carbon atom
Explanation:
For both RNA and DNA, chemical groups such as phosphate (PO3-) attaches to the 5' carbon of the pentose sugar (deoxyribose in DNA, ribose in RNA). 
While hydroxyl group (OH) attaches to the 3' carbon atom of the pentose sugar.
Thus, a nucleic acid structure structure reveals a several repeating units of nucleotides where nitrogenous base links to a pentose sugar, who in turns is linked to phosphate group 
 
        
             
        
        
        
The answer is a he id correct
        
             
        
        
        
Maria and craters are explained below:
<u>Explanation:
</u>
- The Moon is divided into light area lunar highlands and a dark area called Lunar Maria.
- Lunar Maria is large, dark, basaltic plains formed on earth's moon formed by ancient volcanic eruptions.
- Craters are formed when an impacting object falls and hits the moon's surface with greater speed and also formed as a result of the outward explosion of rocks.
- Craters are often caused by asteroids and meteorites with the lunar surface.  
- Unlike earth-moon does not have an atmosphere to protect itself from impacting bodies. This is the reason for more number of craters formed on earth.
 
 
        
             
        
        
        
A variation is a reference to the differences or deviations, such as the structure and form, as for crossing over is the exchange of genetic material between the non-sister chromatids of the homologous chromosomes during meiosis.