Webduring crossing over the chromatids get twisted around each other meaning that a portion from each homologous pair is exchanged. . This means that the alleles are exchanged and increases genetic diversity because of new combinations Reduction of chromosome number in meiosis is biologically important. Explain why. WebCrossing over occurs between non-sister chromatids Segments of adjacent homologous are exchanged Creates new combinations of linked genes When chromatids are separated into different gametes, gametes produces will not contain the same combination of alleles as the parental chromosomes Creates variation in offspring
Chromosomal crossover - Wikipedia
WebTwo genetically different haploid somatic/body cells are produced. a. Two genetically identical diploid somatic/body cells are produced. After a long evening of intense … WebMay 10, 2024 · This question is describing the process of crossing over, which occurs only during prophase I of meiosis. During the process of crossing over, alleles of a gene are exchanged between non-sister chromatids of homologous chromosomes (mother and father chromosomes). Hence, a unique GAMETE that has been genetically recombined … dallas stars regular season schedule
Chapter 6 Selected Questions Flashcards Quizlet
WebCrossing over. The points where homologues cross over and exchange genetic material are chosen more or less at random, and they will be different in each cell that goes through meiosis. If meiosis happens many times, as in humans, crossovers will happen at many different points. Random orientation of homologue pairs. Webd) All of the above are correct. e) Both a and b are correct. E. The rate at which mitosis occurs varies dramatically for different types of cells. The most rapid cell division occurs: … Webfor prenatal screening to determine if a fetus has the correct number of chromosomes, to determine whether a fetus is male or female, to detect the possible presence of chromosomal abnormalities such as deletions, inversions, or translocations. Human gametes are produced by ___. meiosis. Normal human gametes carry _____ … birch wood cabinets stained