Question

underers meiosis, how many cells will result, 12) If a eukaryotic cell has 20 chromosomes and and how many chromosomes will they contain? A) 4 cells, each with 20 chromosomes B) 4 cells, each with 10 chromosomes C) 2 cells, each with 10 chromosomes D) 2 cells, each with 20 chromosomes Answer: 13) Crossing over occurs during which stage of meiosis? A) telophase I B) metaphase II C) anaphase II D) prophase II E) prophase I Answer: 14) Which of the following occurs during anaphase I? A) Homologous chromosomes are moved to the metaphase plate. B) Sister chromatids are separated. C) Crossing over begins. D) Homologous chromosomes are separated. E) Cytokinesis occurs. Answer: 15) Meiosis II is essentially the same as mitosis except that the outcome produces cells that are: A) diploid. B) somatic. C) genetically identical to each other. D) haploid Answer: 16) What is the term for an observable trait of an organism? A) element B) phenotype C) hybrid D) genotype E) allele Answer: 17) Mendel postulated that individuals have genetic elements that exist in pairs, which determine a single phenotype. What do we now know these pairs of elements to be? 4) two haploid sets of chromosomes 3) two alleles of a gene on homologous chromosomes ) pairs of sister chromatids b) a sperm and an egg nswer:

Answer 1

a. 12 Ans B) B) 4 cells , each with 10 chromosomes Eukaryotic cell has 20 chromosome it undergoes meiosis create haploid qametee during meiosis one cell divides twice to form 4 daughter cell 4 each with 10 chromosomes 0:13 | Ans 5 E)_ LE) prophase I - crossing over occurs during prophase I of meiosis. in which homologou's chromosomes are pair with each other é exchange diffrent segments of genetic material to form recombinant chromosome. . 14. Ans D .. DJ The homologous chromosomes are separated . During anaphase I homologous chromosomes are separated and migrate toward the opposite polisi