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Mitotic divisions - PowerPoint PPT Presentation

INTRODUCTION TO ANIMAL DIVERSITY

INTRODUCTION TO ANIMAL DIVERSITY

INTRODUCTION TO ANIMAL DIVERSITY. Chapter 32 Our Kingdom We are Animals. Animals Are. Species-rich Morphologically diverse lineage of multicellular organisms on the tree of life Distinguished by two traits they eat they move

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1.59k views • 102 slides
Angiosperms

Angiosperms

Angiosperms. Phylum Anthophyta. Angiosperms Seed vessel 300,000-450,000+ species Extremely diverse Dominant plant group Monophyletic Monocots Eudicots Basal Angiosperms. GENERALLY!. wikipedia. Nutrition. Most free-living Parasites Hemi-parasites Saprophytes. Terminology.

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1.51k views • 38 slides
Animal Development

Animal Development

Animal Development. Chapter 47. Ppt courtesy of Tracy Jackson http://home.att.net/~tljackson/neville.html. Preformation. How does an egg become an animal? Until the end of the 18 th century, the prevailing theory was that the embryo was a miniature infant.

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698 views • 37 slides
Chapter 42-43

Chapter 42-43

Animal Reproduction. Chapter 42-43. Sexual vs. Asexual R eproduction. Asexual offspring all have same genes no variation Sexual gametes (sperm & egg) ? fertilization mixing of genes ? variation. Fertilization. Joining of egg & sperm external usually aquatic animals internal

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448 views • 33 slides
Plantae

Plantae

Plantae. Seed Plants. Vascular Plants. Formation of vascular tissue Xylem (water) Phloem (food) True leaves, roots, and stems Lignin Sporophyte generation dominate. Alternation of Generation. Alternation of Generation. Sporophyte dependent on gametophyte mosses

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539 views • 32 slides
Plantae

Plantae

Plantae. Seed Plants. Vascular Plants. Formation of vascular tissue Xylem (water) Phloem (food) True leaves, roots, and stems Lignin Sporophyte generation dominate. Alternation of Generation. Alternation of Generation. Sporophyte dependent on gametophyte mosses

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443 views • 32 slides
Animal Science 434

Animal Science 434

Animal Science 434. Lecture 12: Spermatogenesis. Production of Fertile Sperm. hormonal regulation of the testis mitotic division of spermatogonia meiotic divisions of spermatocytes morphologic transformation of spermatids into spermatozoa. Hormonal Regulation of the Testis. LH. LH. LH.

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439 views • 27 slides
Prophase

Prophase

Anaphase. Prophase. Metaphase. INTERPHASE G1 phase . Metabolic changes prepare the cell for division. At a certain point - the restriction point - the cell is committed to division and moves into the S phase.

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349 views • 24 slides
Animal Reproduction & Development

Animal Reproduction & Development

Animal Reproduction & Development. What is the advantage of this development system? . Oogenesis. Unequal meiotic divisions unequal distribution of cytoplasm 1 egg 2 polar bodies. Meiosis 1 completed during egg maturation. ovulation. Meiosis 2 completed triggered by fertilization.

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750 views • 22 slides
Fertilization and development

Fertilization and development

Fertilization and development. Anatomy & Physiology Mrs. Quezada. Aim: How does fertilization occur? . Key terms review : Pregnancy : events that occur from time of fertilization until birth Gestation period : period of development from last menstrual period until birth

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509 views • 16 slides
Introduction to Embryology

Introduction to Embryology

Introduction to Embryology. Definition of Embryology: It is the study of the growth and differentiation undergone by an organism in the course of development from a single fertilized egg cell into a highly complex and independent living being like parents. Introduction to Embryology.

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1.88k views • 12 slides
Chapter 34 - ANIMALS

Chapter 34 - ANIMALS

Chapter 34 - ANIMALS. 34-1 The Nature of Animals. 34.1. Vertebrate An animal with a backbone Invertebrate An animal without a backbone. CHARACTERISTICS. Animals are: Multicellular Heterotrophic Lack cell walls Most reproduce sexually Most have movement. Multicellular Organization.

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314 views • 12 slides
Angiosperm Reproduction Chapter 38

Angiosperm Reproduction Chapter 38

Angiosperm Reproduction Chapter 38. Parts of a Flower. Stigma Style Ovary. Carpel/Pistil (female). Stamen (male). Anther Filament. petals. ovule. sepal. Sperm Formation. Anther contains the microsporangia Microsporangia (2N) creates 4 haploid microspores by meiosis

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132 views • 9 slides

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