The vitamin that is destroyed by excessive heat and light is: MCQ with Answer and Explanation

Explanation:
Most bacteria possess a single circular double-stranded DNA molecule located in the nucleoid region. Some bacteria may also have linear chromosomes or multiple chromosomes, but the typical prokaryotic chromosome is circular. Eukaryotes have linear chromosomes. Plasmids are small, circular extra-chromosomal DNA in bacteria.

Explanation:
The founder effect is a type of genetic drift that occurs when a small group of individuals becomes isolated from a larger population, establishing a new population with a different allele frequency. This can lead to reduced genetic variation and increased prevalence of certain traits. Examples: high frequency of polydactyly in Amish community.

Explanation:
The humerus is the single, long bone of the upper arm, connecting the shoulder to the elbow. The radius and ulna are the two parallel bones of the forearm (lower arm), connecting the elbow to the wrist. The patella, commonly known as the kneecap, is a small, flat, triangular bone located at the front of the knee joint, not in the skull. Thus, statements 1 and 2 are correct.