1 / 7

Chapter 7: Sex Determination

Chapter 7: Sex Determination. Life cycles and reproductive modes *Asexual reproduction – formation of new individuals from the cell(s ) of a single parent. *Sexual reproduction – reproduction through the fusion of gametes.

hedy
Download Presentation

Chapter 7: Sex Determination

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 7: Sex Determination Life cycles and reproductive modes *Asexual reproduction – formation of new individuals from the cell(s) of a single parent. *Sexual reproduction – reproduction through the fusion of gametes. *Alternation of generations – alternation of forms or of mode of reproduction in the life cycle of an organism. Some additional terms: *Primary sexual differentiation *Secondary sexual differentiation *Unisexual, dioecious and gonochoric *Bisexual, monoecious and hermaphroditic

  2. Chlamydomonas

  3. Caenorhabditiselegans (C. elegans)

  4. X and Y Chromosomes: Early Studies 1906 Edmund B. Wilson and Protenor

  5. X and Y Chromosomes: Early Studies Wilson and Lygaeus

  6. X and Y Chromosomes: Early Studies Homogametic sex – sex which produces uniform gametes with respect to sex chromosomes. Heterogametic sex – sex which produces gametes with unlike sex chromosomes. *The male is not always the heterogametic sex… Examples: Moths, butterflies, most birds, some fish, reptiles, amphibians, at least one species of plants

  7. XX XY Chromosome Composition in Humans Karyotype

More Related