Answer:
The options are
A.Independent assortment
B. Mutation
C. Crossing over
D. Non disjunction 
The answer is A.Independent assortment
Explanation:
Independent assortment of genes involves the separation of genes during the formation and development of reproductive cells.
A boy has XY chromosome and a lady has XX chromosomes. This explains why Sue inherited the mother's copy of chromosome 13 but their father's copy of chromosome 14 while her brother Billy inherited their father's copy of both chromosomes 13 and 14. He inherited both due to the presence of XY chromosomes.
 
        
             
        
        
        
Answer:
The correct answer is "True".
Explanation:
Over-the-counter (OTC) medicines are a type of drugs that are sold directly to the consumer without needing a doctor's prescription. OTC medicines that contain decongestants and antihistamines can raise blood pressure and heart rate, therefore its use for children must be monitored. The FDA reports that children, particularly under the age of 2, could suffer life-threatening side effects from taking these medicines, including: convulsions, rapid heart rates and death.
 
        
             
        
        
        
 In bioinformatics, a sequence alignment is a way of arranging the sequences of DNA, RNA, or protein to identify regions of similarity that may be a consequence of functional, structural, or evolutionary relationships between the sequences
plz mark brainliest
 
        
             
        
        
        
Answer:
The answer is letter A.
Explanation:
A loss-of-function mutant in the gene encoding Mad2.
 
        
             
        
        
        
The answer would be the ozone layer. <span>A layer of ozone in the upper atmosphere absorbs </span>UV radiation<span> and </span>prevents<span> most of it from </span>reaching<span> the </span>Earth<span>. ... This means that more </span>ultraviolet radiation<span> can pass through the atmosphere to the </span>Earth's<span> surface, particularly at the poles and nearby regions during </span>certain<span> times of the year.
I hope that this helped you! Good luck. :)</span>