Exercise 13 MITOSIS: REPLICATION OF EUKARYOTIC CELLS ANSWERS TO QUESTIONS 1. a. Mitosis and cytokinesis are often referred to collectively as "cellular division." Why are they more accurately called cellular replication? The result of mitosis is production of two cells (replicates) identical to the parent cell. The genetic material is replicated rather than divided. b. Does the cell cycle have a beginning and an end? The organization of our study of cellular events indicates a beginning and
Premium DNA Chromosome Meiosis
What does the cell use the released energy for? 13. Diagram the steps of mitosis. Label the centrioles‚ chromosomes‚ chromatin‚ chromatids‚ nuclear membrane‚ centromere‚ spindle fibers. 14. What is the purpose of mitosis? What is the purpose of meiosis? Define homologous chromosomes‚ sister chromatids. 15. Fill in the following table: Result is Haploid or diploid Function of process # of cells produced List a type of organism who uses this process Autosomes or gametes Are the daughter
Free DNA Cell Mitosis
many oogonia as well as primary oocytes become atretic • By the 7th month‚ the majority of oogonia have degenerated except for a few near the surface Note: No oogonia are present at birth • All surviving primary oocytes have entered prophase of meiosis I‚ and most of them are individually surrounded by a single layer of flattened‚ follicular epithelial cells • The primary oocytes enclosed by this layer of cells constitutes a primordial follicle • Primary oocytes begin the first meiotic division
Premium Meiosis Menstrual cycle
Question 1 1 out of 1 points Which of the following is true about “meiosis”? Select all that apply. Answers: Reproductive cells undergo meiosis Non-germ cells are reproduced Red blood cells undergo meiosis Number of chromosomes reduces by half in phase one Cell divides to produce four daughter cells Response Feedback: Meiosis occurs only in replicating gametes or reproducing cells. In phase one‚ the number of chromosomes is reduced by half but the chromatid pairs remain together. In phase
Premium Chromosome Cell Cell nucleus
Name Chantell Johnson BioScience 100A Online Virtual Lab Report: Part I Points: 120 (30/each) Due by: 12:00 PM PST on the second Saturday of class Directions 1. Type your answers‚ observations‚ and results in bold. 2. Save your report often as you fill it out‚ so as not to lose information. 3. Use the report form as a single document‚ do not turn in separate reports for each lab 4. Use the ‘Save As’ option to save your file as a Word file 5. Save your lab report with this name: Last name
Premium Bacteria Eukaryote Cell
Reproduction is the biological process by which new individual organisms – "offspring" – are produced from their "parents". Reproduction is a fundamental feature of all known life; each individual organism exists as the result of reproduction. There are two forms of reproduction: asexual and sexual. In asexual reproduction‚ an organism can reproduce without the involvement of another organism. Asexual reproduction is not limited to single-celled organisms. The cloning of an organism is a form of
Premium Reproduction Organism Genetics
7/6/2011 CELL DIVISION CHAPTER 3: CELL DIVISION 3.1 THE CONCEPT OF CELL DIVISION 3.2 THE CELL CYCLE 3.3 MITOSIS 3.4 MEIOSIS Related to the theory of cells Rudolph virchow ; 1855 stated; „Omnis cellula e cellula‟ Every cell is from a cell or “All new cells are derived from other cells” A cell (daughter cell) is originated from another cell ( ) through . In cell division‚ is inherited from one generation to the next. Involve the distribution of genetic material (DNA) to each daughter
Premium Cell cycle Mitosis Chromosome
4.1.1 State that eukaryotic chromosomes are made of DNA and proteins 4.1.2 Define gene‚ allele and genome Gene: | Heritable factors that control specific characteristics | Allele: | One specific form of a gene (differing form other alleles by one or few bases‚ occupying the same gene locus as other alleles of that gene) | Genome: | Whole genetic information of the organism | Chromosomes are made of DNA and protein 4.1.3 Define gene mutation * Gene mutation is the change in the base
Premium Gene Chromosome DNA
Safety/Science Foundations 1. Avoid the situation; don’t touch 2. Close-toed shoes 3. Students 4. To protect your eyes from chemicals 5. Before starting the lab 6. Students should not play around and follow directions. Students should clean up after their selves after finishing a lab. 7. Hypothesis - a testable explanation for an observation 8. Observation - statement made using senses. ex. I hear chirping Inference - interpretation from observations. ex. "The chirping is from the bird"
Premium Science Scientific method Experiment
sought to identify males having an extra chromosome. The result is 1 in 500 to 1000 newborn males have the XXY chromosome arrangement. Klinefelter disorder is a genetic condition but it is not inherited from parents. It usually happens randomly during meiosis; specifically chromosomes can’t
Premium Y chromosome X chromosome Chromosome