RECITATION Flashcards
What is the primary purpose of mitosis in multicellular organisms?
nag po-produce ng body cells. for growth and repair ng damaged tissue.
In which phase of mitosis do chromosomes become visible?
prophase. nagiging mas visible sila kasi condensed na sila.
How do the spindle fibers function during mitosis?
helps the chromosomes to move to the opposite side of the cell. atsaka sila ang humihila sa mga chromosomes (chromatids/sister chromatids. TAMA BA???? EWAN KO NA NALILITO NA AKO) para maghiwalay
What role does the centromere play in chromosome separation?
nagho-hold sa sister chromatids, tapos siya rin yung dinidikitan (or hinihila or kinakapitan) ng spindle fibers para maghiwalay sila.
How does cytokinesis differ in plant and animal cells?
What are the stages of mitosis, and what occurs during each stage?
• Prophase: nag co-condense ang chromosomes at nag fo-form na yung spindle fibers.
• Metaphase: Nag-aalign ang chromosomes sa gitna/equatorial plate. • Anaphase: Naghiwalay ang sister chromatids at hinihila papunta sa opposite sides. (walang forever) • Telophase: Bumabalik ang nuclear membrane, nagiging less condensed ang chromosomes. • Cytokinesis: Hiwalay na ang cells.
How does DNA replication relate to mitosis?
What is the significance of the G2 phase before a cell enters mitosis?
How does mitosis contribute to tissue repair and growth?
nag po-produce ng body cells. like kapag may sugat ka, gumagawa ng cell through mitosis para ma repair ‘yung damaged tissue. tas sa growth, para tumagkad ka or lumaki.
Why is mitosis often described as a process of “division to multiply”?
How does meiosis ensure genetic diversity in sexually reproducing organisms?
Sa meiosis, nagkakaroon ng crossing over at independent assortment, kaya iba-iba ang genes ng bawat offspring.nagkakaroon ng genetic variety.
What is the significance of crossing over during meiosis?
nag e-exchange ng genetic material.
How many rounds of cell division occur in meiosis, and how do they differ?
two. meiosis I (nag-separate ang homologous chromosomes) at meiosis II (nag-separate ang sister chromatids).
Explain the role of homologous chromosomes in meiosis.
homologous chromosomes may parehong genes pero galing sa magkaibang parent. paternal homologous, maternal homologous.
At what stage does synapsis and the formation of tetrads occur in meiosis?
prophase I, nagpa-pair ang homologous chromosomes (synapsis) at bumubuo ng tetrads.