Male has sex chromosomes: One X + one Y
Female has sex chromosomes: Two X
So, Female must contribute by one X chromosome, but male can contribute either by X or Y, if he sends, X chromosome, then Female (Girl) will form, but if he sends Y chromosome, then Male (Boy) will form
Hope this helps!
        
             
        
        
        
Answer:
distal convoluted tubule
Explanation:
This is the region  of the nephron downstream the macula densa ,which extends the  to convulence of the collecting duct.Due to response to  mineralocoticoid aldosterone they can be categorised as Distal Convoluted 1 and Distal convoluted 2. This steroid hormones is responsible for homeostatic control of hyperkalemia.
The DCT cells are simple cuboidal epithelium.The stained or  pointed part of the image represented this possess this shape,they are therefore portion of DCT. Besides the stained cells are located above the glomerulus ()in  the cortex as indicated,therefore they can not be the proximal which must be  below the glomerulus, based on the  shape ascending and descending loop of Henle (despite  located in the cortex too).
The functions of the DCT is  in the absorption and secretions of ions(majorly ca+,Na+ and chloride ions.By secreting hydrogen and reabsorbing  HC03 ions ,the pH of the urine is maintained. 
 
        
             
        
        
        
<h2><u>Answer:</u></h2>
Genetic designing gives crops that are more affordable to develop. One of the most serious issues that the world may look soon is a sustenance supply lack because of the expanding exponential development of the populace. 
 Genetic designing gives crops that are progressively generous, bigger and more affordable to develop that might be the response to mounting future issues. The capacity to control plants in the lab makes modifying their development design an a lot quicker change than numerous long periods of characteristic choice in the homestead and field.  
 
        
        
        
They can conclude that the epicenter is the same distance from both recording stations.
        
                    
             
        
        
        
In meiosis , the no of chromosomes in the daughter cells reduces into half no of that in the initial cell :18