Answer:
A single gene on the Y chromosome plays a crucial role in the parental development of the testes. 
Explanation:
Y chromosome is present only in males and this chromosomes is the distinguishing factor which separates males from females. It is the smallest chromosome but of utmost importance due to its sex determining feature. Up till now, studies show that Y chromosomes only carry limited amount of genes.  
The Y chromosome, most importantly, comprises of the SRY gene. This is the gene responsible for determining the testis and for the development of the testis. The SRY gene is responsible for sex determination. 
 
        
             
        
        
        
All the spheres interact with other spheres. For example, rain (hydrosphere) falls from clouds in the atmosphere to the lithosphere and forms streams and rivers that provide drinking water for wildlife and humans as well as water for plant growth (biosphere).
 
        
                    
             
        
        
        
Answer:
Yes, The neocortex is the center for higher brain functions, such as perception, decision-making and language. Our group focuses on the mechanisms governing neocortex development, with a strong interest on the role and regulation of the neural stem cells.
Explanation:
 
        
             
        
        
        
The 5 different living things chosen based on my location are:
- Birds
- Lizard
- Snakes
- Rats
- cockroaches
Yes, the structure of one organism's parts work do work with a different organism such as the snakes and lizards scales does the same function.
<h3>What are some of the structures of these living things?</h3>
The structure and how the structure relates to the organism's function are;
- Birds - The beak is used for picking food, sallow and to catch insects.
- Lizard -Scales on their outer layer skin that is dry and has some levels of keratin and it act to  protect their body and hinder water loss.
- Snakes - Scales on their outer layer skin that is dry and has some levels of keratin and it act to  protect their body and hinder water loss.
- Rats - Teeth consist of a pair of incisors as well as molars for picking insect, chewing and eating.
- Cockroaches - has antennae for sensitivity as well as strong mouthparts that is often used scraping and chewing food.
Therefore, The 5 different living things chosen based on my location are:
- Birds
- Lizard
- Snakes
- Rats
- cockroaches
Learn more about  living things from
brainly.com/question/280237
#SPJ1