The enzyme that catalyzes the synthesis of cAMP from ATP is: MCQ with Answer and Explanation

Explanation:
Mendel's first law (law of segregation) states that two alleles of a gene separate during gamete formation (meiosis) so that each gamete receives only one allele. This is due to the separation of homologous chromosomes in anaphase I of meiosis. Fertilization restores the diploid number. This law explains the 3:1 phenotypic ratio in monohybrid crosses. Mitosis maintains the allele pair.

Explanation:
The chemical evolution theory, also known as the biochemical theory of the origin of life, was proposed independently by Alexander Oparin (1924) and J.B.S. Haldane (1929). They proposed that life originated from pre-existing non-living organic molecules (like RNA, proteins, lipids) through a series of complex chemical reactions in the primitive reducing atmosphere of Earth.

Explanation:
The fossil record shows a chronological sequence of life forms, providing direct evidence of evolutionary changes over time. Embryological similarities, such as the presence of pharyngeal slits and a notochord in early vertebrate embryos, support the idea of common ancestry. Biogeography, the study of species distribution, shows that species are not randomly distributed but are related to their geographic origins and evolutionary history. Thus, statements 1 and 2 are correct.