Explanation:
they were responsible for the oxygenation of the atmosphere and oceans
The DNA base sequence carries the information a cell needs to assemble protein and RNA molecules.
Homologous types of chromosomes pair together to form a bivalent. They undergo synapsis which is the process of pairing. In each bivalent. there would be a total of two centromeres and four sister chromatids. crossing over is the term used for the physical exchange of material between two homologous chromosomes. A<span> chiasma</span><span> is the visible evidence that exchange of genetic material occured.</span>
Answer:
The statement is true.
Explanation:
Genetics is responsible for studying the way in which the characteristics of living organisms, whether morphological, physiological, biochemical or behavioral, are transmitted, generated and expressed, from one generation to another, under different environmental conditions, that is, try to explain how the characteristics of living beings are inherited and modified, which can be in shape (the height of a plant, the color of its seeds, the shape of the flower...), physiological (for example, the constitution of certain protein that performs a specific function within the body of an animal), and even behavior (in the form of courtship before mating in certain groups of birds, or the way of mating of mammals, among others). In this way, the principles of genetics tries to study how these characteristics pass to generation after generation, and why, in turn, they vary generation after other.
