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bio11
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
Tape/disk: | Home » Personal collection » Acorn tapes » Commercial_Releases » box04_tape02b_acorn_acornsoft_biology_data.wav |
Filename: | bio11 |
Read OK: | ✔ |
File size: | 1812 bytes |
Load address: | 1BF3 |
Exec address: | 1BF3 |
Duplicates
There are 4 duplicate copies of this file in the archive:
- AEW website » acornsoft_ib » acornsoft_ib_5_25_discs_Biology-Acornsoftib_HD-BIOL.dsd » bio11
- AEW website » acornsoft_ib » acornsoft_ib_tapes_Biology-Acornsoftib_Biology-IvanBerg_BE.uef » bio11
- Personal collection » Acorn ADFS disks » Electron » Acornsoft_Educational.ADF » Biology/bio11
- Personal collection » Acorn hard disk » zipped_disks » elk08 » acornsofte/Biology/bio11
- Personal collection » Acorn tapes » Commercial_Releases » box04_tape02b_acorn_acornsoft_biology_data.wav » bio11
File contents
1813 BIOLOGY 11 1 REPRODUCTION Higher organisms have specialised organs for reproduction. Male and female gametes (sex cells) are produced, genetic material joining together at fertilisation. In plants and lower animals, asexual reproduction also occurs. A single organism produces offspring by separation. # 2 SEXUAL REPRODUCTION Sexual reproduction involves: 1) The formation of haploid gametes with half the chromosomes of the diploid adult. (e.g. egg, sperm, pollen, ovum in ovule.) 2) The fusion of gametes to restore the diploid chromosome number is fertilisation. Gametes may be from different organisms (mammal), the same organism (some flowers), and may or may not be physically similar. # 3 SEXUAL REPRODUCTION Advantages: It produces variety. It may improve the species' chance of survival. Disadvantages: It normally needs two organisms. The organisms are well-adapted, cannot be copied. It is slow. The offspring are different from both parents. # 4 ASEXUAL REPRODUCTION Asexual reproduction produces offspring identical to parents by: BUDDING (yeast, hydra) BINARY FISSION (bacteria, amoeba) SPORES (fungi) - but zygospore sexual PARTHENOGENESIS (stick insect) VEGETATIVE PROPAGATION (bulb, runners) Advantages: It maintains a good strain. It requires only one individual. It is rapid. Disadvantages: There is no variety. Organism may not survive disease etc. # 5 GENETICS Genetics is the study of inheritance, and of the reasons for variation between plants and animals of the same species. Early work on pea plants etc. was done by 19th century Austrian monk, Gregor Mendel. # 6 MENDEL'S WORK Mendel used plants which always bred 'true', e.g. tall. He then cross-bred a pair of plants, e.g. tall and short. All the offspring (F1) were identical to one parent, called the dominant. PARENTS TALL X SHORT F1 HYBRID ALL TALL TALL IS DOMINANT SHORT IS RECESSIVE # 7 MENDEL'S WORK Mendel then inbred the F1 hybrids. He found more of the dominant type, about 3 times as many as the other (recessive) in the next (F2) generation. F1 TALL X TALL F2 3 TALL: 1 SHORT # 8 EXPLANATION There are two genes for each character. If they are not the same the dominant character appears. Each parent gives one gene to the offspring. P TALL ������������ SHORT TT � tt � F1 TALL TALL ��� TALL TALL Tt Tt � Tt Tt � � � F2 TALL TALL TALL SHORT TT Tt Tt tt 3 TALL: 1 SHORT # 9 GLOSSARY OF GENETIC TERMS GENOTYPE: The genes are actually present. PHENOTYPE: What appears because of the genes. HOMOZYGOUS: Both genes for a character are the same. HETEROZYGOUS: Genes for a character are different. RECESSIVE: The character appears only when homozygous. DOMINANT: The character appears when heterozygous. # 10 EVOLUTION EVOLUTION: the change in the features of a population of organisms over many generations. EVIDENCE: 1) FOSSILS: Hard parts/impressions of organisms preserved in sedimentary rock. Pattern of species has changed. 2) LIVING FOSSILS: Living organisms which resemble fossils more than other living forms. May provide a link between groups. 3) ANATOMY: Similarities in structure may show relationships; the same basic bone arrangements in vertebrate limbs. # 11 EVIDENCE (continued) 4) PHYSIOLOGY: Similarities in enzyme function or protein structure. 5) LARVAE/EMBRYOS: All vertebrate embryos have gill pouches. Often larvae suggest relationships not apparent in adults. 6) BIOGEOGRAPHY: Marsupials confined to Australia as separation took place before placental mammals appeared? 7) DIRECT EVIDENCE: The changes in bacteria and insects after drugs/DDT. Peppered moth. # 12 NATURAL SELECTION DARWIN'S THEORY 1) All organisms produce more offspring than could survive, but..... 2) Populations stay more or less constant, so there must be a struggle for survival. 3) In any species there is variation, and .... 4) Some varieties will be better adapted to the environment. These are more likely to survive: survival of the fittest. # 13 OTHER THEORIES LAMARCK suggested that acquired characters are inherited, i.e. that any features developed during an organism's life were passed to offspring. In modern terms this would be inheritance of phenotypes, not genotypes. (see screen 9). The CREATIONIST view is that all living (and fossil) variety was created at once - dated by USHER at 4004 BC. # T #1 2 (a) The fusion of gametes is called ..... (b) How many chromosomes does a gamete have, compared with an adult cell? 2 ~ FERTILISATION ~ HALF #2 2 Name the 2 gametes produced by mammals. 2 ~ SPERMS SPERM EGGS EGG OVUM ~ EGGS SPERMS EGG SPERM OVUM #3 3 In which type of reproduction is variety produced? 1 SEXUAL #4 4 Which type of reproduction produces offspring identical to the parents? 1 ASEXUAL #5 5 What is the study of inheritance called? 1 GENETICS #6 5 Whose work forms the basis of genetics? 1 MENDEL MENDEL'S GREGOR MENDEL GREGOR MENDEL'S #7 9 The genes present in an organism make up its ..... 1 GENOTYPE #8 9 Different genes for a character mean that the organism must be ..... 1 HETEROZYGOUS #9 10 What name is given to the gradual change in a population over many generations? 1 EVOLUTION #10 12 Who first put forward the theory of evolution by natural selection? 1 DARWIN CHARLES DARWIN e
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Male| 00000060 20 61 6e 64 0d 0d 66 65 6d 61 6c 65 20 67 61 6d | and..female gam| 00000070 65 74 65 73 20 28 73 65 78 20 63 65 6c 6c 73 29 |etes (sex cells)| 00000080 20 61 72 65 0d 0d 70 72 6f 64 75 63 65 64 2c 20 | are..produced, | 00000090 67 65 6e 65 74 69 63 20 6d 61 74 65 72 69 61 6c |genetic material| 000000a0 20 6a 6f 69 6e 69 6e 67 0d 0d 74 6f 67 65 74 68 | joining..togeth| 000000b0 65 72 20 61 74 20 66 65 72 74 69 6c 69 73 61 74 |er at fertilisat| 000000c0 69 6f 6e 2e 0d 0d 49 6e 20 70 6c 61 6e 74 73 20 |ion...In plants | 000000d0 61 6e 64 20 6c 6f 77 65 72 20 61 6e 69 6d 61 6c |and lower animal| 000000e0 73 2c 20 61 73 65 78 75 61 6c 0d 0d 72 65 70 72 |s, asexual..repr| 000000f0 6f 64 75 63 74 69 6f 6e 20 61 6c 73 6f 20 6f 63 |oduction also oc| 00000100 63 75 72 73 2e 20 41 20 73 69 6e 67 6c 65 0d 0d |curs. A single..| 00000110 6f 72 67 61 6e 69 73 6d 20 70 72 6f 64 75 63 65 |organism produce| 00000120 73 20 6f 66 66 73 70 72 69 6e 67 20 62 79 0d 0d |s offspring by..| 00000130 73 65 70 61 72 61 74 69 6f 6e 2e 0d 23 0d 32 20 |separation..#.2 | 00000140 53 45 58 55 41 4c 20 52 45 50 52 4f 44 55 43 54 |SEXUAL REPRODUCT| 00000150 49 4f 4e 0d 53 65 78 75 61 6c 20 72 65 70 72 6f |ION.Sexual repro| 00000160 64 75 63 74 69 6f 6e 20 69 6e 76 6f 6c 76 65 73 |duction involves| 00000170 3a 0d 0d 31 29 20 54 68 65 20 66 6f 72 6d 61 74 |:..1) The format| 00000180 69 6f 6e 20 6f 66 20 68 61 70 6c 6f 69 64 20 67 |ion of haploid g| 00000190 61 6d 65 74 65 73 0d 0d 20 20 20 77 69 74 68 20 |ametes.. with | 000001a0 68 61 6c 66 20 74 68 65 20 63 68 72 6f 6d 6f 73 |half the chromos| 000001b0 6f 6d 65 73 20 6f 66 20 74 68 65 0d 0d 20 20 20 |omes of the.. | 000001c0 64 69 70 6c 6f 69 64 20 61 64 75 6c 74 2e 20 28 |diploid adult. 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Gamete| 00000260 73 20 6d 61 79 20 62 65 20 66 72 6f 6d 0d 0d 20 |s may be from.. | 00000270 20 20 64 69 66 66 65 72 65 6e 74 20 6f 72 67 61 | different orga| 00000280 6e 69 73 6d 73 20 28 6d 61 6d 6d 61 6c 29 2c 20 |nisms (mammal), | 00000290 74 68 65 0d 0d 20 20 20 73 61 6d 65 20 6f 72 67 |the.. same org| 000002a0 61 6e 69 73 6d 20 28 73 6f 6d 65 20 66 6c 6f 77 |anism (some flow| 000002b0 65 72 73 29 2c 20 61 6e 64 0d 0d 20 20 20 6d 61 |ers), and.. ma| 000002c0 79 20 6f 72 20 6d 61 79 20 6e 6f 74 20 62 65 20 |y or may not be | 000002d0 70 68 79 73 69 63 61 6c 6c 79 0d 0d 20 20 20 73 |physically.. s| 000002e0 69 6d 69 6c 61 72 2e 0d 23 0d 33 20 53 45 58 55 |imilar..#.3 SEXU| 000002f0 41 4c 20 52 45 50 52 4f 44 55 43 54 49 4f 4e 0d |AL REPRODUCTION.| 00000300 41 64 76 61 6e 74 61 67 65 73 3a 0d 0d 49 74 20 |Advantages:..It | 00000310 70 72 6f 64 75 63 65 73 20 76 61 72 69 65 74 79 |produces variety| 00000320 2e 0d 0d 49 74 20 6d 61 79 20 69 6d 70 72 6f 76 |...It may improv| 00000330 65 20 74 68 65 20 73 70 65 63 69 65 73 27 20 63 |e the species' c| 00000340 68 61 6e 63 65 20 6f 66 0d 0d 73 75 72 76 69 76 |hance of..surviv| 00000350 61 6c 2e 0d 0d 44 69 73 61 64 76 61 6e 74 61 67 |al...Disadvantag| 00000360 65 73 3a 0d 0d 49 74 20 6e 6f 72 6d 61 6c 6c 79 |es:..It normally| 00000370 20 6e 65 65 64 73 20 74 77 6f 20 6f 72 67 61 6e | needs two organ| 00000380 69 73 6d 73 2e 0d 0d 54 68 65 20 6f 72 67 61 6e |isms...The organ| 00000390 69 73 6d 73 20 61 72 65 20 77 65 6c 6c 2d 61 64 |isms are well-ad| 000003a0 61 70 74 65 64 2c 20 63 61 6e 6e 6f 74 0d 0d 62 |apted, cannot..b| 000003b0 65 20 63 6f 70 69 65 64 2e 0d 0d 49 74 20 69 73 |e copied...It is| 000003c0 20 73 6c 6f 77 2e 0d 0d 54 68 65 20 6f 66 66 73 | slow...The offs| 000003d0 70 72 69 6e 67 20 61 72 65 20 64 69 66 66 65 72 |pring are differ| 000003e0 65 6e 74 20 66 72 6f 6d 20 62 6f 74 68 0d 0d 70 |ent from both..p| 000003f0 61 72 65 6e 74 73 2e 0d 23 0d 34 20 41 53 45 58 |arents..#.4 ASEX| 00000400 55 41 4c 20 52 45 50 52 4f 44 55 43 54 49 4f 4e |UAL REPRODUCTION| 00000410 0d 41 73 65 78 75 61 6c 20 72 65 70 72 6f 64 75 |.Asexual reprodu| 00000420 63 74 69 6f 6e 20 70 72 6f 64 75 63 65 73 0d 6f |ction produces.o| 00000430 66 66 73 70 72 69 6e 67 20 69 64 65 6e 74 69 63 |ffspring identic| 00000440 61 6c 20 74 6f 20 70 61 72 65 6e 74 73 20 62 79 |al to parents by| 00000450 3a 0d 0d 42 55 44 44 49 4e 47 20 28 79 65 61 73 |:..BUDDING (yeas| 00000460 74 2c 20 68 79 64 72 61 29 0d 0d 42 49 4e 41 52 |t, hydra)..BINAR| 00000470 59 20 46 49 53 53 49 4f 4e 20 28 62 61 63 74 65 |Y FISSION (bacte| 00000480 72 69 61 2c 20 61 6d 6f 65 62 61 29 0d 0d 53 50 |ria, amoeba)..SP| 00000490 4f 52 45 53 20 28 66 75 6e 67 69 29 20 2d 20 62 |ORES (fungi) - b| 000004a0 75 74 20 7a 79 67 6f 73 70 6f 72 65 20 73 65 78 |ut zygospore sex| 000004b0 75 61 6c 0d 0d 50 41 52 54 48 45 4e 4f 47 45 4e |ual..PARTHENOGEN| 000004c0 45 53 49 53 20 28 73 74 69 63 6b 20 69 6e 73 65 |ESIS (stick inse| 000004d0 63 74 29 0d 0d 56 45 47 45 54 41 54 49 56 45 20 |ct)..VEGETATIVE | 000004e0 50 52 4f 50 41 47 41 54 49 4f 4e 20 28 62 75 6c |PROPAGATION (bul| 000004f0 62 2c 20 72 75 6e 6e 65 72 73 29 0d 0d 41 64 76 |b, runners)..Adv| 00000500 61 6e 74 61 67 65 73 3a 0d 0d 49 74 20 6d 61 69 |antages:..It mai| 00000510 6e 74 61 69 6e 73 20 61 20 67 6f 6f 64 20 73 74 |ntains a good st| 00000520 72 61 69 6e 2e 0d 49 74 20 72 65 71 75 69 72 65 |rain..It require| 00000530 73 20 6f 6e 6c 79 20 6f 6e 65 20 69 6e 64 69 76 |s only one indiv| 00000540 69 64 75 61 6c 2e 0d 49 74 20 69 73 20 72 61 70 |idual..It is rap| 00000550 69 64 2e 0d 0d 44 69 73 61 64 76 61 6e 74 61 67 |id...Disadvantag| 00000560 65 73 3a 0d 0d 54 68 65 72 65 20 69 73 20 6e 6f |es:..There is no| 00000570 20 76 61 72 69 65 74 79 2e 0d 4f 72 67 61 6e 69 | variety..Organi| 00000580 73 6d 20 6d 61 79 20 6e 6f 74 20 73 75 72 76 69 |sm may not survi| 00000590 76 65 20 64 69 73 65 61 73 65 20 65 74 63 2e 0d |ve disease etc..| 000005a0 23 0d 35 20 47 45 4e 45 54 49 43 53 0d 47 65 6e |#.5 GENETICS.Gen| 000005b0 65 74 69 63 73 20 69 73 20 74 68 65 20 73 74 75 |etics is the stu| 000005c0 64 79 20 6f 66 20 69 6e 68 65 72 69 74 61 6e 63 |dy of inheritanc| 000005d0 65 2c 0d 0d 61 6e 64 20 6f 66 20 74 68 65 20 72 |e,..and of the r| 000005e0 65 61 73 6f 6e 73 20 66 6f 72 20 76 61 72 69 61 |easons for varia| 000005f0 74 69 6f 6e 0d 0d 62 65 74 77 65 65 6e 20 70 6c |tion..between pl| 00000600 61 6e 74 73 20 61 6e 64 20 61 6e 69 6d 61 6c 73 |ants and animals| 00000610 20 6f 66 20 74 68 65 20 73 61 6d 65 0d 0d 73 70 | of the same..sp| 00000620 65 63 69 65 73 2e 0d 0d 0d 45 61 72 6c 79 20 77 |ecies....Early w| 00000630 6f 72 6b 20 6f 6e 20 70 65 61 20 70 6c 61 6e 74 |ork on pea plant| 00000640 73 20 65 74 63 2e 20 77 61 73 20 64 6f 6e 65 0d |s etc. was done.| 00000650 0d 62 79 20 31 39 74 68 20 63 65 6e 74 75 72 79 |.by 19th century| 00000660 20 41 75 73 74 72 69 61 6e 20 6d 6f 6e 6b 2c 20 | Austrian monk, | 00000670 47 72 65 67 6f 72 0d 0d 4d 65 6e 64 65 6c 2e 0d |Gregor..Mendel..| 00000680 23 0d 36 20 4d 45 4e 44 45 4c 27 53 20 57 4f 52 |#.6 MENDEL'S WOR| 00000690 4b 0d 4d 65 6e 64 65 6c 20 75 73 65 64 20 70 6c |K.Mendel used pl| 000006a0 61 6e 74 73 20 77 68 69 63 68 20 61 6c 77 61 79 |ants which alway| 000006b0 73 20 62 72 65 64 0d 0d 27 74 72 75 65 27 2c 20 |s bred..'true', | 000006c0 65 2e 67 2e 20 74 61 6c 6c 2e 0d 0d 48 65 20 74 |e.g. tall...He t| 000006d0 68 65 6e 20 63 72 6f 73 73 2d 62 72 65 64 20 61 |hen cross-bred a| 000006e0 20 70 61 69 72 20 6f 66 20 70 6c 61 6e 74 73 2c | pair of plants,| 000006f0 0d 0d 65 2e 67 2e 20 74 61 6c 6c 20 61 6e 64 20 |..e.g. tall and | 00000700 73 68 6f 72 74 2e 0d 0d 41 6c 6c 20 74 68 65 20 |short...All the | 00000710 6f 66 66 73 70 72 69 6e 67 20 28 46 31 29 20 77 |offspring (F1) w| 00000720 65 72 65 20 69 64 65 6e 74 69 63 61 6c 0d 0d 74 |ere identical..t| 00000730 6f 20 6f 6e 65 20 70 61 72 65 6e 74 2c 20 63 61 |o one parent, ca| 00000740 6c 6c 65 64 20 74 68 65 20 64 6f 6d 69 6e 61 6e |lled the dominan| 00000750 74 2e 0d 0d 20 20 20 20 20 20 50 41 52 45 4e 54 |t... PARENT| 00000760 53 20 54 41 4c 4c 20 58 20 53 48 4f 52 54 0d 0d |S TALL X SHORT..| 00000770 20 20 20 20 20 20 46 31 20 48 59 42 52 49 44 20 | F1 HYBRID | 00000780 41 4c 4c 20 54 41 4c 4c 0d 0d 20 20 20 20 20 20 |ALL TALL.. | 00000790 54 41 4c 4c 20 49 53 20 44 4f 4d 49 4e 41 4e 54 |TALL IS DOMINANT| 000007a0 0d 0d 20 20 20 20 20 20 53 48 4f 52 54 20 49 53 |.. SHORT IS| 000007b0 20 52 45 43 45 53 53 49 56 45 0d 23 0d 37 20 4d | RECESSIVE.#.7 M| 000007c0 45 4e 44 45 4c 27 53 20 57 4f 52 4b 0d 4d 65 6e |ENDEL'S WORK.Men| 000007d0 64 65 6c 20 74 68 65 6e 20 69 6e 62 72 65 64 20 |del then inbred | 000007e0 74 68 65 20 46 31 20 68 79 62 72 69 64 73 2e 20 |the F1 hybrids. | 000007f0 48 65 0d 0d 66 6f 75 6e 64 20 6d 6f 72 65 20 6f |He..found more o| 00000800 66 20 74 68 65 20 64 6f 6d 69 6e 61 6e 74 20 74 |f the dominant t| 00000810 79 70 65 2c 20 61 62 6f 75 74 0d 0d 33 20 74 69 |ype, about..3 ti| 00000820 6d 65 73 20 61 73 20 6d 61 6e 79 20 61 73 20 74 |mes as many as t| 00000830 68 65 20 6f 74 68 65 72 0d 0d 28 72 65 63 65 73 |he other..(reces| 00000840 73 69 76 65 29 20 69 6e 20 74 68 65 20 6e 65 78 |sive) in the nex| 00000850 74 20 28 46 32 29 0d 0d 67 65 6e 65 72 61 74 69 |t (F2)..generati| 00000860 6f 6e 2e 0d 0d 20 20 20 20 20 20 46 31 20 54 41 |on... F1 TA| 00000870 4c 4c 20 58 20 54 41 4c 4c 0d 0d 20 20 20 20 20 |LL X TALL.. | 00000880 20 46 32 20 20 33 20 54 41 4c 4c 3a 0d 0d 20 20 | F2 3 TALL:.. | 00000890 20 20 20 20 20 20 20 20 31 20 53 48 4f 52 54 0d | 1 SHORT.| 000008a0 23 0d 38 20 45 58 50 4c 41 4e 41 54 49 4f 4e 0d |#.8 EXPLANATION.| 000008b0 54 68 65 72 65 20 61 72 65 20 74 77 6f 20 67 65 |There are two ge| 000008c0 6e 65 73 20 66 6f 72 20 65 61 63 68 0d 0d 63 68 |nes for each..ch| 000008d0 61 72 61 63 74 65 72 2e 0d 0d 49 66 20 74 68 65 |aracter...If the| 000008e0 79 20 61 72 65 20 6e 6f 74 20 74 68 65 20 73 61 |y are not the sa| 000008f0 6d 65 20 74 68 65 20 64 6f 6d 69 6e 61 6e 74 0d |me the dominant.| 00000900 0d 63 68 61 72 61 63 74 65 72 20 61 70 70 65 61 |.character appea| 00000910 72 73 2e 20 45 61 63 68 20 70 61 72 65 6e 74 20 |rs. Each parent | 00000920 67 69 76 65 73 0d 0d 6f 6e 65 20 67 65 6e 65 20 |gives..one gene | 00000930 74 6f 20 74 68 65 20 6f 66 66 73 70 72 69 6e 67 |to the offspring| 00000940 2e 0d 0d 50 20 20 20 20 20 20 20 20 54 41 4c 4c |...P TALL| 00000950 20 91 91 91 91 91 91 91 91 91 91 91 91 20 53 48 | ............ SH| 00000960 4f 52 54 0d 20 20 20 20 20 20 20 20 20 20 54 54 |ORT. TT| 00000970 20 20 20 20 20 20 20 20 90 20 20 20 20 20 20 20 | . | 00000980 20 74 74 0d 20 20 20 20 20 20 20 20 20 20 20 20 | tt. | 00000990 20 20 20 20 20 20 20 20 90 0d 20 20 20 20 20 20 | .. | 000009a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 46 | .F| 000009b0 31 20 20 20 20 20 20 54 41 4c 4c 20 20 54 41 4c |1 TALL TAL| 000009c0 4c 20 91 91 91 20 20 54 41 4c 4c 20 54 41 4c 4c |L ... TALL TALL| 000009d0 0d 20 20 20 20 20 20 20 20 20 54 74 20 20 20 20 |. Tt | 000009e0 54 74 20 20 20 90 20 20 20 20 54 74 20 20 20 54 |Tt . 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