Answer:
both could be correct
Explanation:
It usually depends on how fast or how severe the change is, if its mild or happenes slowly over time they may adapt, if it is extreame or happenes very quickly the species could very well die out.
Answer: Possession of Valves
Explanation: Veins possess valves which ensures that blood flows in only one direction. Valves helps blood to flow back to the heart against gravitational force.
Arteries don't have valves because the pressure originating from the heart is capable of causing the blood to flow in one direction.
Answer:
The correct answer is a gene
Explanation:
The DNA segment that carries information for coding one protein or polypeptide is called a gene. According to one gene-one polypeptide hypothesis, each gene is responsible for making a single chain of the polypeptide.
Originally it was said that one gene codes for one enzyme but later it was found that some gene also codes for non-enzyme proteins and single polypeptide chains. So after this research, the theory was modified and one gene-one polypeptide theory came. Therefore the right answer is gene.
Females who lift weights are not going to develop large, bulky muscles because they have lower testosterone levels than men.
<h3>What is testosterone?</h3>
Testosterone is defined as the main sex hormone of the males that are produced in the testicles.
The functions of Testosterone include
- muscle mass and strength, and
- the production of red blood cells and sperm.
This hormone is produced in small quantities in females therefore, females who lift weights are not going to develop large, bulky muscles.
Learn more about hormones here:
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