Explore Meiosis and Fertilization

heredity

lower or simpler organisms reproduce via asexual reproduction and complex ones reproduce via sexual reproduction

progenies that are clones of their parent cells

<p>sexual reproduction</p> Signup and view all the answers

<p>male (stamen) and female (ovary) reproductive organs</p> Signup and view all the answers

<p>meiosis</p> Signup and view all the answers

<p>The purpose of meiosis in sexual reproduction is to produce gametes or sex cells.</p> Signup and view all the answers

<p>Meiosis only occurs in gamete-forming cells and produces haploid cells with half the number of chromosomes, while mitosis occurs in all other types of cells and produces diploid cells with the same number of chromosomes as the parent cell.</p> Signup and view all the answers

<p>The end products of meiotic cell division are haploid cells with half the number of chromosomes.</p> Signup and view all the answers

<p>Human gametes have 23 chromosomes.</p> Signup and view all the answers

<p>The process that restores a complete diploid set of genomes in the zygote is fertilization.</p> Signup and view all the answers

<p>The major causes of genetic variation are DNA heritable mutation, gene flow, and sexual reproduction through meiosis and random fertilization.</p> Signup and view all the answers

<p>Meiosis facilitates the creation of genetically different organisms.</p> Signup and view all the answers

<p>Crossing over leads to the formation of unique combinations of genetic material.</p> Signup and view all the answers

<p>The number of chromosomes in a cell affects the number of genetic combinations it can produce through independent assortment.</p> Signup and view all the answers

<p>The process of fertilization adds an even bigger number of possible genetic combinations, making it highly unlikely for any two sperm or egg cells to be identical.</p> Signup and view all the answers

<p>Genetic variation provides benefit in handling changing ecological conditions better than those that do not contain genetic variation.</p> Signup and view all the answers

<p>Synapsis is the process of getting together and pairing of homologous chromosomes.</p> Signup and view all the answers

<p>Crossing over leads to the rearrangement of chromosomes and the formation of chiasmata.</p> Signup and view all the answers

<p>Crossing over leads to the formation of unique combinations of genetic materials derived from both parents, increasing genetic variation.</p> Signup and view all the answers