During Meiosis 1 in Prophase 1 crossing over occurs. The two chromosomes switch part of their genetic information. Also independent assortment occurs during meiosis which is the formation of random combinations of chromosomes in meiosis and of genes on different pairs of homologous chromosomes.
Are their any answer choices? If this is referring to the Evolutionary basis of Charles Darwin’s work on Beaks than limited resources would result in a change or a development of new anatomical features such as a change in beaks or complete extinction of species as a whole
Answer:
Option B, It was made in stars that lived before the solar system formed.
Explanation:
Almost all the carbon that exists today with in the living organisms was produced in the stars. When these stars exploded during the big bang theory all the carbon within hem was introduced in the environment of earth some billions of years ago. Hence , though carbon introduced in earth’s environment was due to big bang, its origin is from the stars. Hence option B is the correct answer
Cyanobacteria is responsible for generation of oxygen on planet earth and thus option D is in correct.
Answer:
Prophase is the first phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.
Metaphase is a stage in the cell cycle where all the genetic material is condensing into chromosomes.
Anaphase is the stage of mitosis and meiosis in which the chromosomes move toward the poles of the spindle.
Telophase is the final stage of mitosis and of the second division of meiosis in which the spindle disappears and the nucleus reforms around each set of chromosomes.
Cytokinesis is the division of cells after either mitosis or meiosis I and II.
Explanation:
A : DNA in the nucleus of the egg controls all cell activities
