The process by which traits are transferred from parents to offspring is:
A. Heredity
B. Evolution
C. Variation
D. Mutation
Answer: Option A
Solution (By JKExamLibrary)
Heredity (inheritance) is the transmission of genetic information and traits from parents to offspring through genes. Variation refers to differences among individuals, evolution is the change in heritable traits over generations, and mutation is a change in DNA sequence. Mendel's laws describe the patterns of heredity. Genes are the units of heredity.
Explanation:
Type 1 diabetes mellitus is an autoimmune disease where beta cells of the pancreas are destroyed, leading to little or no insulin production. Patients require insulin injections. Type 2 involves insulin resistance. Diabetes insipidus involves ADH deficiency, Cushing's syndrome is cortisol excess.
Consider the following statements about the human heart:
1. The bicuspid valve is on the left side.
2. The tricuspid valve is on the right side.
3. The pulmonary valve prevents backflow into the right ventricle.
Which of the above is/are correct?
Explanation:
Mitochondria release cytochrome c and other factors that activate caspases, initiating apoptosis. They have circular DNA and 70S ribosomes.
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