Work Examples 1. Explain briefly with a diagram, why it is not advisable for two sickle cells
carriers to marry
2. A woman with one sickle-cell gene was married to a man with one sickle
cell gene. Using appropriate crosses, explain the genetic constitution of their
children.​

Which of the following is an advantage of solar energy?

Which statement describes an endocrine function rather than an exocrine function? a. salivary glands release saliva into the mouth. b. sweat glands release sweat onto the skin c. the pineal gland releases melatonin into the blood. d. esophageal glands release mucus into the esophagus.

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection