Mitosis and Meioses Exam | Quizzes and 100% Correct Verified Solutions
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Course
Mitosis and Meiosis
Institution
Mitosis And Meiosis
Explain the events occuring in each phase of Meiosis I - Answer Prophase I -
Centrioles move to opposite ends. Spindle fibers form, and chromosomes
condense
Metaphase I- Chromosomes attach to the spindle fibers and line up at the
equator of the cell
Anaphase I - Chromosomes are spereated by sp...
Mitosis and Meioses Exam | Quizzes and 100%
Correct Verified Solutions
Explain the events occuring in each phase of Meiosis I - Answer Prophase I -
Centrioles move to opposite ends. Spindle fibers form, and chromosomes
condense
Metaphase I- Chromosomes attach to the spindle fibers and line up at the
equator of the cell
Anaphase I - Chromosomes are spereated by spindle fiber and chromatids go to
the poles
Telophase I- Chromatides decondense back into chromatin and 2 new nuclear
envelopes form.
Explain the events occuring in each phase of Meiosis II - Answer Prophase II -
Spindle fibers reform, and centrioles move to opposite ends.
Metaphase II- Spindle fibers attach and move to equator in a single file line
Anaphase II - Spindle Fibers shorten and seperate, chromosomes into seperate
chromitides and go to poles
Telophase II- Four new nuclei form and cytokinesis follows
How many sperm and egg are made during meiosis? - Answer Sperm-4
Egg-1
The making of gametes is called_____? - Answer meiosis
, Describe the process of crossing over and why it is important. - Answer Happens
in Meiosis 1 when paired up with homologous chromosomes exchange genitic
material with one another. Major source of genetic diversity in the species
What is a cell cycle regulator? What the different types? - Answer Cyclin - a
protein which regulates the cell cycle
Internal regulators - proteins that respond to events inside the cell
External regulators - proteins that respond to events outside the cell (e.g. growth
factors)
Why do cells divide? - Answer DNA "Overload"-Not enough information to run a
big cell
Exchanging Materials-Must be able to eliminate wastes easily which can only
happen if small
Ratio of Surface Area to Volume-Volume increases faster than the surface area
What is Interphase? - Answer Cell spends most of its time in interphase,cell
grows, carries out basic cell functions,making organelles, and copy's
chromosomes
What is M phase? - Answer Where cell division happens, consists of Mitosis and
Cytokinesis. Once the M Phase is finished, the cell cycle is complete and will begin
again in the 2 newly formed daughter cells
What is the difference of Mitosis and Cytokinesis> - Answer Mitosis is the division
of the nucleus, while cytokinesis is the division of the cytoplasm
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