'Primary spermatocyte' diaporamas de présentation

Chapter 28: The Reproductive System

Chapter 28: The Reproductive System. BIO 211 Lecture Instructor: Dr. Gollwitzer. Today in class we will: Compare the male and female reproductive systems Discuss cell division Compare and contrast mitosis and meiosis Discuss gametogenesis (spermatogenesis) in the male Spermiogenesis

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Animal Reproduction

Animal Reproduction. Animal Reproduction. Reproduction is asexual or sexual asexual reproduction offspring genetically identical to parent and siblings saves costs of sexual reproduction resulting population lacks genetic variability. Animal Reproduction. Reproduction is asexual or sexual

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Chapter 18 The reproductive system Physiologic Concepts Spermatogenesis

Chapter 18 The reproductive system Physiologic Concepts Spermatogenesis

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Male Reproductive System

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Meiosis & Sexual Reproduction

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The Reproductive Systems

The Reproductive Systems. Sexual reproduction produces new individuals germ cells called gametes (sperm & 2nd oocyte) fertilization produces one cell with one set of chromosomes from each parent Gonads produce gametes & secrete sex hormones Reproductive systems

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Meiosis

Premedical- Biology. Meiosis. Reproduction The ability to produce new individual organisms, either asexually from a single parent organism, or sexually from two parent organisms . Asexual reproduction is not limited to single-celled organ isms - m ost plants

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What will happen to the penis if the arteries within the penis dilate?

What will happen to the penis if the arteries within the penis dilate?. The male becomes impotent. Nitric oxide ceases to be released, and the penis becomes flaccid. The male attains an erection. The male ejaculates. On a warm day, why will the cremaster muscle be relaxed?.

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GAMETOGENESIS

GAMETOGENESIS. Dr. Ahmed Fathalla Ibrahim. MITOSIS. DIFFERENCE BETWEEN MITOSIS & MEIOSIS. DEFINITION. The process of formation of mature male & female gametes.

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Gametogenesis

Gametogenesis. Gametogenesis means formation of gametes (Sperm & Ova). Spermatogenesis : Means formation of sperm ; male gametes. Oogenesis: Means formation of ovum ; female gametes. Sperm and ovum are highly specialized sex cells. Both types possess three main phases:

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