'Polar bodies' diaporamas de présentation

first meiotic division: prophase: leptotene

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Mitosis/Meiosis How are they different?

Mitosis/Meiosis How are they different?. Crossing over. The exchange of DNA between the chromatid arms on homologous pairs is called ________________. This type of cell division used by bacteria to reproduce. Binary fission.

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Genetics

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CELL DIVISION

CELL DIVISION. Mitosis. Why do cells divide?. Growth Repair Replace Reproduction. Mitosis. Interphase Growth Cell activities (make proteins, transport nutrients,eliminate waste) Nucleus is visible Genetic material is called chromatin (long thin strands) Replication of DNA

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Meiosis and Sexual Reproduction

Meiosis and Sexual Reproduction. SEXUAL REPRODUCTION. Sex cells formed by meiosis. Requires 2 parents. Offspring not identical. Meiosis. The process that results in the formation of gametes. Gametes. Sex cells, egg or sperm, which have haploid chromosomes. Haploid.

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Meiosis

Meiosis. Gamete Production. Similar in many ways to mitosis Several differences however Involves 2 cell divisions Results in 4 cells with 1/2 the normal genetic information. Vocabulary: Diploid (2N) - Normal amount of genetic material Haploid (N) - 1/2 the genetic material.

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Aim : How does sexual reproduction occur?

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Embryology and Vertebrate

Embryology and Vertebrate. Sexual Reproduction. 2 individual create a SIMILAR offspring. Gonads. Sex Organs (Ovary and Testes). Gametes. Sex Cells (Egg and Sperm). MEIOSIS. When a person makes a sex cell Female: eggs Mae: sperm. https://www.youtube.com/watch?v=toWK0fIyFlY.

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Spermatogenesis vs. Oogenesis

Spermatogenesis vs. Oogenesis. Gametogenesis using Meiosis in Males and Females. What is the name of the special cells that undergo meiosis?. Gametogenesis. The process whereby haploid gametes (reproductive sex cells) are created. Spermatogenesis in males Oogenesis in females.

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Meiosis

Meiosis. Mitosis vs Meiosis. Meiosis occurs in gametes (sex cells) and contains haploid (N) number of chromosomes. Meiosis is a type of cell division which produces gametes containing half the number of chromosomes as parent body cells. Figure 11-15 Meiosis. Section 11-4. Meiosis I.

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Cell division

Cell division. Meiosis. Meiosis. In meiosis, a single diploid cell gives rise to 4 haploid cells. Occurs in two distinct stages, Meiosis I and Meiosis II. PMAT still applies but now it is doubled. PMAT PMAT. Meiosis I. Prophase I DNA replication precedes the start of meiosis I.

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Meiosis

Meiosis. Meiosis. Cell division to form the gametes , sperm (male gamete) and egg (female gamete). Characteristic of eukaryotes only: not in prokaryotes. Normal cells are diploid : 2 copies of every gene.

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Gamete Maturation

Gamete Maturation. Chapter 3: Meiosis & Development 3.3: Gamete Maturation. How do sperm form?. Spermatogenesis- formation of sperm cells Begins in testes with diploid stem cells called spermatogonia

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Chapter 17 Vocab

Chapter 17 Vocab . Animal Reproduction. Day 1 Vocab . Estrogen Estrous cycle Estrus Estrus synchronization Fallopian tubes fertilization. Day 2 . Follicle-stimulating hormone Gametes Gestation Haploid Infundibulum lactation. Day 3 . Luteinizing hormone Meiosis Metaestrus

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GAMETOGENESIS: The making of gametes

GAMETOGENESIS: The making of gametes. GAMETE - SEX CELL (SPERM OR EGG) GENESIS - TO MAKE OR CREATE. Types of Gametogenesis. SPERMATOGENESIS : Makes MALE sperm cells OOGENESIS: Makes the FEMALE egg cells

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