Monday, October 31, 2011

Domain Eukarya : Kingdom Protista

Do Now: # _____ What do you think you will see under the microscope? Make some drawings.

Planktonic Algae in Freshwater
Fig. 4a. Examples of the tremendous diversity in cell form of the microscopic planktonic algae in freshwater. Epilithic = growing on rocks, Epipsammic = growing in sand, Epipelic = growing in sediments, Epiphytic = growing on plants. (Round 1981). Used with permission of Cambridge University Press.
These area all microscopic genera, a few of which may form filaments or crusts visible to the naked eye. Epilithic: 1. Calothrix, 2. Ulothrix, 3. Chaetphora, 4. Chamaesiphon, 5. Cymbella. Epiphytic: 6. Oedogonium, 7. Ophiocytium, 8. Characium, 9. Tabellaria, 10. Cocconeis, 11. Gomphonema, 12. Dermocarpa. Planktonic: 13. Pandoria, 14. Fragilaria, 15. Anabaena, 16. Ceratium, 17. Ankistrodesmus, 18. Melosira, 19. Chlamydomonas, 20. Mallonomas, 21. Staurastrum, 22. Dinobyron, 23. Cyclotella, 24 Navicula, 25 Green Unicells, 26. Opephora, 27. Nitzschia, 28. Amphora, 29. Achnanthes, 30. Nitzschia, 31. Achnanthes, 32. Cymbella, 33. Gomphonema. Epipelic: 34. Caloneis, 35. Spirulina, 36. Mesimopedia, 37. Navicula, 38. Amphora, 39. Oscillatoria, 40. Euglena, 41. Phormidium, 42. Pinnularia, 43. Surirella, 44. Closterium, 45. Trachelomonas, 46. Cymatopluera.

Wednesday, October 19, 2011

chromosomes and meoisis and mitosis



OrganismScientific nameDiploid number of chromosomesNotes
Helminthostachys zeylanica94
Adders-tongueOphioglossum reticulatum1200 or 1260This fern has the highest known chromosome number.
African Wild DogLycaon pictus78[1]
AlfalfaMedicago sativa32[2]Cultivated alfalfa is tetraploid, with 2n=4x=32. Wild relatives have 2n=16.[2]
American BadgerTaxidea taxus32
American MartenMartes americana38
American MinkNeovison vison30
Aquatic RatAnotomys leander92[3]Tied for highest number in mammals with Ichthyomys pittieri.
BarleyHordeum vulgare14[2]
Bat-eared FoxOtocyon megalotis72[1]
BeanPhaseolus sp.22[2]All species in the genus have the same chromosome number, including P. vulgaris, P. coccineus, P. acutifolis, and P. lunatus.[2]
Beaver (American)Castor canadensis40
Beaver (Eurasian)Castor fiber48
Beech MartenMartes foina38
Bengal FoxVulpes bengalensis60
Bittersweet nightshadeSolanum dulcamara24[4][5]
Black nightshadeSolanum nigrum72[6]
CabbageBrassica oleracea18[2]Broccoli, cabbage, kale, kohlrabi, brussels sprouts, and cauliflower are all the same species and have the same chromosome number.[2]
Capuchin MonkeyCebus x54[7]
Carp104
CatFelis catus38
ChickenGallus gallus domesticus78
ChimpanzeePan troglodytes48 [8]
ChinchillaChinchilla lanigera64 [9]
Coatimundi38
CottonGossypium hirsutum52[2]2n=4x; Cultivated upland cotton is derived from an allotetraploid
CowBos primigenius60
CoyoteCanis latrans78[1]
Crab-eating rat (semiaquatic rodent)Ichthyomys pittieri92[3]Tied for highest number in mammals with Anotomys leander.
Deer MousePeromyscus maniculatus48
DholeCuon alpinus78
DingoCanis lupus dingo78[1]
DogCanis lupus familiaris78[10]76 autosomal and 2 sexual.[11]
DolphinDelphinidae Delphis44
DonkeyEquus africanus asinus62
Dove78[12]Based on African collared dove
Duck-billed Platypus52
EarthwormLumbricus terrestris36
Echidna63/6463 (XXY, male) and 64 (XXXX, female)
Elephant56
Elk (Wapiti)Cervus canadensis68
Eurasian BadgerMeles meles44
European honey beeApis mellifera3232 for females, males are haploid and thus have 16.
European Mink38
European PolecatMustela putorius40
Fennec FoxVulpes zerda64[1]
FerretMustela putorius furo40
Field HorsetailEquisetum arvense216
Fisher (animal)38a type of marten
FossaCryptoprocta ferox42
Fruit flyDrosophila melanogaster8[13]6 autosomal, and 2 sexual
GiraffeGiraffa camelopardalis62
Goat60
Golden JackalCanis aureus78[1]
Gorilla48
Grape fernsSceptridum90
Gray FoxUrocyon cinereoargenteus66[1]
Gypsy moth62
Hare[14][15]48
Hawkweed8
Hedgehog Genus Atelerix (African hedgehogs)90
Hedgehog Genus Erinaceus (Woodland hedgehogs)88
HorseEquus ferus caballus64
HumanHomo sapiens46[16]44 autosomal and 2 sex
Husk TomatoPhysalis pubescens24[17]
Hyena40
Jack jumper antMyrmecia pilosula2[18]2 for females, males are haploid and thus have 1; smallest number possible. Other ant species have more chromosomes.[18]
Kangaroo16This includes several members genus Macropus, but not the red kangaroo (M. rufus, 40)[19]
Kit Fox50
LionPanthera leo38
Long-nosed Cusimanse (a type of mongoose)36
MaizeZea mays20[2]
Maned WolfChrysocyon brachyurus76
MangoMangifera indica40[2]
Meerkat36
MoonwortsBotrychium90
MosquitoAedes aegypti6[20]The 2n=6 chromosome number is conserved in the entire family Culicidae, except in Chagasia bathana which has 2n=8.[20]
MouseMus musculus40
Mule63semi-infertile
Nagaho-no-natsu-no-hana-warabiBotrypus strictus88B. strictus and B. virginianus have been shown to be paraphyletic in the genus Botrypus
OatsAvena sativa42[2]This is a hexaploid with 2n=6x=42. Diploid and tetraploid cultivated species also exist.[2]
Orangutan48
Oriental Small-clawed OtterAonyx cinerea38
PeaPisum sativum14[2]
Pig38
Pigeon80
Pine Marten38
PineappleAnanas comosus50[2]
PlatypusOrnithorhynchus anatinus52 [21]Ten sex chromosomes.
PorcupineErethizon dorsatum34 [9]
PotatoSolanum tuberosum48[2]This is a tetraploid; wild relatives mostly have 2n=24.[2]
Rabbit44
Raccoon (Procyon lotor)38[22]
Raccoon DogNyctereutes procyonoides56
Raccoon DogNyctereutes viverrinus42some sources say sub-species differ with 38, 54, and even 56 chromosomes
RadishRaphanus sativus18[2]
Rat42
Rattlesnake fernBotrypus virginianus184
Red DeerCervus elaphus68
Red FoxVulpes vulpes34[1]Plus 3-5 microsomes.
Red Panda36
Reeves's MuntjacMuntiacus reevesi46
Rhesus Monkey42[23]
RiceOryza sativa24[2]
RyeSecale cereale14[2]
Sable38
Sable Antelope46
Sea Otter38
Sheep54
ShrimpPenaeus semisulcatus86-92 [24]
Slime MoldDictyostelium discoideum12 [25]
Snail24
Spotted Skunk64
Starfish36
Striped skunk50
Swamp WallabyWallabia bicolor10/1110 for male, 11 for female
Tanuki/Raccoon DogNyctereutes procyonoides albus38
Thale CressArabidopsis thaliana10
Tibetan fox36
TigerPanthera tigris38
TobaccoNicotiana tabacum48[2]Cultivated species is a tetraploid.[2]
Turkey82
Virginia OpossumDidelphis virginiana22[26]
WheatTriticum aestivum42[2]This is a hexaploid with 2n=6x=42. Durum wheat is Triticum turgidum var. durum, and is a tetraploid with 2n=4x=28.[2]
White-tailed deerOdocoileus virginianus70
Wolf78
Wolverine42
Woolly Mammoth58extinct; tissue from a frozen carcass
Yeast32
Yellow Mongoose36


Chromosome Numbers in Different Species



Common NameGenus and SpeciesDiploid Chromosome
Number
BuffaloBison bison
60
CatFelis catus
38
CattleBos taurus, B. indicus
60
DogCanis familiaris
78
DonkeyE. asinus
62
GoatCapra hircus
60
HorseEquus caballus
64
HumanHomo sapiens
46
PigSus scrofa
38
SheepOvis aries
54

Advanced and Supplemental Topics

Monday, October 17, 2011

Tuesday, October 4, 2011

Protists - Do Now #13

Do Now #13:  Now that endosymbiosis has happened draw what you think living EUKARYOTIC organisms looked like.


Kingdom Protista:


 Protista = the very first
all Eukaryotic














Protists belong to the Kingdom Protista, which includes mostly unicellular organisms that do not fit into the other kingdoms.
Characteristics of Protists


They all need some kind of a water-based environment--which can be fresh or marine water, snow, damp soil, polar bear hairs--in which to live. All are aerobic and have mitochondria to do cellular respiration, and some have chloroplasts and can do photosynthesis.
  • mostly unicellular, some are multicellular (algae)
  • can be heterotrophic or autotrophic
  • most live in water (though some live in moist soil or even the human body)
  • ALL are eukaryotic (have a nucleus)
  • A protist is any organism that is not a plant, animal or fungus
Classification of Protists
  • how they obtain nutrition
  • how they move
Animallike Protists - also called protozoa (means "first animal") - heterotrophs
Plantlike Protists - also called algae - autotrophs
Funguslike Protists - heterotrophs, decomposers, external digestion



The transition to eukaryotic cells appears to have occurred during the Proterozoic Era, about 1.2 to 1.5 billion years ago. However, recent genetic studies suggest eukaryotes diverged from prokaryotes closer to 2 billion years ago. Fossils do not yet agree with this date. The old Kingdom Protista, as I learned it long ago, thus contains some living groups that might serve as possible models for the early eukaryotes. This taxonomic kingdom has been broken into many new kingdoms, reflecting new studies and techniques that help elucidate the true phylogenetic sequence of life on Earth.
http://faculty.southwest.tn.edu/rburkett/kingdom_protista.htm


Protists belong to the Kingdom Protista, which includes mostly unicellular organisms that do not fit into the other kingdoms.
Characteristics of Protists


They all need some kind of a water-based environment--which can be fresh or marine water, snow, damp soil, polar bear hairs--in which to live. All are aerobic and have mitochondria to do cellular respiration, and some have chloroplasts and can do photosynthesis.
  • mostly unicellular, some are multicellular (algae)
  • can be heterotrophic or autotrophic
  • most live in water (though some live in moist soil or even the human body)
  • ALL are eukaryotic (have a nucleus)
  • A protist is any organism that is not a plant, animal or fungus
Classification of Protists
  • how they obtain nutrition
  • how they move
Animallike Protists - also called protozoa (means "first animal") - heterotrophs
Plantlike Protists - also called algae - autotrophs
Funguslike Protists - heterotrophs, decomposers, external digestion



The transition to eukaryotic cells appears to have occurred during the Proterozoic Era, about 1.2 to 1.5 billion years ago. However, recent genetic studies suggest eukaryotes diverged from prokaryotes closer to 2 billion years ago. Fossils do not yet agree with this date. The old Kingdom Protista, as I learned it long ago, thus contains some living groups that might serve as possible models for the early eukaryotes. This taxonomic kingdom has been broken into many new kingdoms, reflecting new studies and techniques that help elucidate the true phylogenetic sequence of life on Earth.










Monday, October 3, 2011

DNA - Do Now 12

Do Now #12 What is DNA and what does it do?




DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms

http://www.dnai.org/

The genes carry the instructions for making all the thousands of proteins that are found in a cell.  The proteins in a cell determine what that cell will look like and what jobs that cell will do. 



DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone.