How can we, humans, look at our relationship to nature differently? In season three of Going Wild, on top of stories about animals, we invite you to journey through the entire ecological web — from the tiniest of life forms to apex predators — alongside the scientists, activists and adventurers who study it. Wildlife biologist and host Dr. Rae Wynn-Grant has been studying wild animals in their natural habitats all over the world for years. Our award-winning podcast takes you inside the hidde ...
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Το περιεχόμενο παρέχεται από το Tony Santore. Όλο το περιεχόμενο podcast, συμπεριλαμβανομένων των επεισοδίων, των γραφικών και των περιγραφών podcast, μεταφορτώνεται και παρέχεται απευθείας από τον Tony Santore ή τον συνεργάτη της πλατφόρμας podcast. Εάν πιστεύετε ότι κάποιος χρησιμοποιεί το έργο σας που προστατεύεται από πνευματικά δικαιώματα χωρίς την άδειά σας, μπορείτε να ακολουθήσετε τη διαδικασία που περιγράφεται εδώ https://el.player.fm/legal.
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West Texas Pine Harvest and Alternation of Generations
MP3•Αρχική οθόνη επεισοδίου
Manage episode 439779656 series 2524302
Το περιεχόμενο παρέχεται από το Tony Santore. Όλο το περιεχόμενο podcast, συμπεριλαμβανομένων των επεισοδίων, των γραφικών και των περιγραφών podcast, μεταφορτώνεται και παρέχεται απευθείας από τον Tony Santore ή τον συνεργάτη της πλατφόρμας podcast. Εάν πιστεύετε ότι κάποιος χρησιμοποιεί το έργο σας που προστατεύεται από πνευματικά δικαιώματα χωρίς την άδειά σας, μπορείτε να ακολουθήσετε τη διαδικασία που περιγράφεται εδώ https://el.player.fm/legal.
A rant about West Texas Pines and the sand blazing star. At the 40 minute mark we begin our dive into the convoluted, confusing but utterly cool phenomenon of Alternation of Generations we talk mostly about Bryophytes (mosses and liverworts) and Lycophytes ("spikemosses" and "clubmosses"), and the ferns, but not gymnosperms or angiosperms). This turns into more of a "lesson" on the subject than a podcast episode.
Key terms to remember :
Gametophyte (haploid), Sporophyte (diploid)
Haploid - 1 set of chromosomes aka 1 copy of the genome
Diploid - 2 sets of chromosomes aka 2 copies of the genome (one as a backup copy)
Meiosis (takes a diploid cell and produces haploid daughter cells, two of which later come together to form a diploid zygote/sporophyte)
Mitosis (Cell divides and produces cells identical to whatever the parent cell was, whether that parent cell was haploid or diploid. Mitosis doesn't reduce the chromosome number by half). Meiosis is synonymous with sex/reproduction/the production of haploid cells).
Evolutionary lineages referenced in this episode and their phylogenetic classification:
Bryophytes (An informal paraphyletic classification used to refer to the non-vascular Phyla Anthocerotophyta (hornworts), Marchantiophyta (liverworts), and Bryophyta (mosses)
Lycophytes : Class Lycopodiopsida, contains 3 orders: Lycopodiales (1 Family : Lycopodiaceae; 3 Subfamilies : Huperzioideae, Lycopodielloideae, Lycopoideae), Selaginellales (1 family : Selaginellaceae), & Isoetales (1 family : Isoetaceae).
Ferns : Class Polypodiopsida.
Contains 4 Subclasses : Equisetidae (Horsetails), Marattiadae (Marratioid Bastards including Angiopteris evecta with 20' long fronds), Ophioglossidae (Whisk Ferns, Grape Ferns, Moonworts), and Polypodiidae (Leptosporangiate Ferns, aka the "classic" ferns including the majority of what people think of when they think of ferns including Maidenhairs, Cinnamon Ferns, Sensitive Ferns, Filmy Ferns, Forked Ferns, Cheilanthoid "Desert" Ferns, Mosquito Ferns, Tree Ferns, Aspleniums, etc.
THUMBNAIL : Archegoniophore (haploid) and Non-photosynthetic Sporophyte (Diploid) of the Baja California liverwort Asterella palmeri, photo by Ken-Ichi Ueda
…
continue reading
Key terms to remember :
Gametophyte (haploid), Sporophyte (diploid)
Haploid - 1 set of chromosomes aka 1 copy of the genome
Diploid - 2 sets of chromosomes aka 2 copies of the genome (one as a backup copy)
Meiosis (takes a diploid cell and produces haploid daughter cells, two of which later come together to form a diploid zygote/sporophyte)
Mitosis (Cell divides and produces cells identical to whatever the parent cell was, whether that parent cell was haploid or diploid. Mitosis doesn't reduce the chromosome number by half). Meiosis is synonymous with sex/reproduction/the production of haploid cells).
Evolutionary lineages referenced in this episode and their phylogenetic classification:
Bryophytes (An informal paraphyletic classification used to refer to the non-vascular Phyla Anthocerotophyta (hornworts), Marchantiophyta (liverworts), and Bryophyta (mosses)
Lycophytes : Class Lycopodiopsida, contains 3 orders: Lycopodiales (1 Family : Lycopodiaceae; 3 Subfamilies : Huperzioideae, Lycopodielloideae, Lycopoideae), Selaginellales (1 family : Selaginellaceae), & Isoetales (1 family : Isoetaceae).
Ferns : Class Polypodiopsida.
Contains 4 Subclasses : Equisetidae (Horsetails), Marattiadae (Marratioid Bastards including Angiopteris evecta with 20' long fronds), Ophioglossidae (Whisk Ferns, Grape Ferns, Moonworts), and Polypodiidae (Leptosporangiate Ferns, aka the "classic" ferns including the majority of what people think of when they think of ferns including Maidenhairs, Cinnamon Ferns, Sensitive Ferns, Filmy Ferns, Forked Ferns, Cheilanthoid "Desert" Ferns, Mosquito Ferns, Tree Ferns, Aspleniums, etc.
THUMBNAIL : Archegoniophore (haploid) and Non-photosynthetic Sporophyte (Diploid) of the Baja California liverwort Asterella palmeri, photo by Ken-Ichi Ueda
214 επεισόδια
MP3•Αρχική οθόνη επεισοδίου
Manage episode 439779656 series 2524302
Το περιεχόμενο παρέχεται από το Tony Santore. Όλο το περιεχόμενο podcast, συμπεριλαμβανομένων των επεισοδίων, των γραφικών και των περιγραφών podcast, μεταφορτώνεται και παρέχεται απευθείας από τον Tony Santore ή τον συνεργάτη της πλατφόρμας podcast. Εάν πιστεύετε ότι κάποιος χρησιμοποιεί το έργο σας που προστατεύεται από πνευματικά δικαιώματα χωρίς την άδειά σας, μπορείτε να ακολουθήσετε τη διαδικασία που περιγράφεται εδώ https://el.player.fm/legal.
A rant about West Texas Pines and the sand blazing star. At the 40 minute mark we begin our dive into the convoluted, confusing but utterly cool phenomenon of Alternation of Generations we talk mostly about Bryophytes (mosses and liverworts) and Lycophytes ("spikemosses" and "clubmosses"), and the ferns, but not gymnosperms or angiosperms). This turns into more of a "lesson" on the subject than a podcast episode.
Key terms to remember :
Gametophyte (haploid), Sporophyte (diploid)
Haploid - 1 set of chromosomes aka 1 copy of the genome
Diploid - 2 sets of chromosomes aka 2 copies of the genome (one as a backup copy)
Meiosis (takes a diploid cell and produces haploid daughter cells, two of which later come together to form a diploid zygote/sporophyte)
Mitosis (Cell divides and produces cells identical to whatever the parent cell was, whether that parent cell was haploid or diploid. Mitosis doesn't reduce the chromosome number by half). Meiosis is synonymous with sex/reproduction/the production of haploid cells).
Evolutionary lineages referenced in this episode and their phylogenetic classification:
Bryophytes (An informal paraphyletic classification used to refer to the non-vascular Phyla Anthocerotophyta (hornworts), Marchantiophyta (liverworts), and Bryophyta (mosses)
Lycophytes : Class Lycopodiopsida, contains 3 orders: Lycopodiales (1 Family : Lycopodiaceae; 3 Subfamilies : Huperzioideae, Lycopodielloideae, Lycopoideae), Selaginellales (1 family : Selaginellaceae), & Isoetales (1 family : Isoetaceae).
Ferns : Class Polypodiopsida.
Contains 4 Subclasses : Equisetidae (Horsetails), Marattiadae (Marratioid Bastards including Angiopteris evecta with 20' long fronds), Ophioglossidae (Whisk Ferns, Grape Ferns, Moonworts), and Polypodiidae (Leptosporangiate Ferns, aka the "classic" ferns including the majority of what people think of when they think of ferns including Maidenhairs, Cinnamon Ferns, Sensitive Ferns, Filmy Ferns, Forked Ferns, Cheilanthoid "Desert" Ferns, Mosquito Ferns, Tree Ferns, Aspleniums, etc.
THUMBNAIL : Archegoniophore (haploid) and Non-photosynthetic Sporophyte (Diploid) of the Baja California liverwort Asterella palmeri, photo by Ken-Ichi Ueda
…
continue reading
Key terms to remember :
Gametophyte (haploid), Sporophyte (diploid)
Haploid - 1 set of chromosomes aka 1 copy of the genome
Diploid - 2 sets of chromosomes aka 2 copies of the genome (one as a backup copy)
Meiosis (takes a diploid cell and produces haploid daughter cells, two of which later come together to form a diploid zygote/sporophyte)
Mitosis (Cell divides and produces cells identical to whatever the parent cell was, whether that parent cell was haploid or diploid. Mitosis doesn't reduce the chromosome number by half). Meiosis is synonymous with sex/reproduction/the production of haploid cells).
Evolutionary lineages referenced in this episode and their phylogenetic classification:
Bryophytes (An informal paraphyletic classification used to refer to the non-vascular Phyla Anthocerotophyta (hornworts), Marchantiophyta (liverworts), and Bryophyta (mosses)
Lycophytes : Class Lycopodiopsida, contains 3 orders: Lycopodiales (1 Family : Lycopodiaceae; 3 Subfamilies : Huperzioideae, Lycopodielloideae, Lycopoideae), Selaginellales (1 family : Selaginellaceae), & Isoetales (1 family : Isoetaceae).
Ferns : Class Polypodiopsida.
Contains 4 Subclasses : Equisetidae (Horsetails), Marattiadae (Marratioid Bastards including Angiopteris evecta with 20' long fronds), Ophioglossidae (Whisk Ferns, Grape Ferns, Moonworts), and Polypodiidae (Leptosporangiate Ferns, aka the "classic" ferns including the majority of what people think of when they think of ferns including Maidenhairs, Cinnamon Ferns, Sensitive Ferns, Filmy Ferns, Forked Ferns, Cheilanthoid "Desert" Ferns, Mosquito Ferns, Tree Ferns, Aspleniums, etc.
THUMBNAIL : Archegoniophore (haploid) and Non-photosynthetic Sporophyte (Diploid) of the Baja California liverwort Asterella palmeri, photo by Ken-Ichi Ueda
214 επεισόδια
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