<h3><u>Answer;</u></h3>
D) Mutations lead to new genes, which may have an advantage over the old forms, causing the species to evolve.
<h3><u>Explanation;</u></h3>
- <em><u>Mutations are sudden, random changes that occur spontaneously in the genetic make up of an organism.</u></em> Mutation are caused by various factors which includes errors in meiosis, and other factors such as chemical mutagens.
- <em><u>Mutations may be beneficial and may play an important role in evolution as they are raw material of genetic variation</u></em>. <em><u>Mutations may lead to genetic variations in the genetic make up of an organism . Therefore mutations are important to mutation since they create new DNA sequences for a given gene and thus resulting to new alleles.</u></em>
The answer is no the polymers in our food do not have the same structure as the polymers in our body because the polymers in our food are in our food and the polymers in our body are in our body
<span>the answer is all of the above</span>
Answer:
The correct answer is: True.
Explanation:
- Obesity is a disease condition in which the BMI or Basal Metabolic Index of a person goes beyond normal.
- The BMI of a person is calculated by finding the ratio between the weight of the person measured in kilograms and the square of the height of the person measured in metres.
- A person having a BMI below 18 is considered to be underweight, between 18 and 25 is normal weight, between 25 and 30 in overweight and above 30 is obese.
- The disease is caused more due to social reasons than biological reasons.
- When a person A lives near the vicinity of another person B who is obese, this means the person A lives in an environment where a proper balanced diet is not maintained during the consumption of food. They tend to consume food rich in oil and fat.
- Hence, the intake of the fat rich food by the person A will result him in consuming fat and oil in amounts far more than his body actually requires. Excess fats deposits in the body thereby increasing his BMI and resulting into obesity.
- Due to obesity the person B will also show the symptom of being lethargic and will not prefer to do exercises. This lethargy would be induced in person A as well.