Question | Answer |
ONE SPECIES DIFFER FROM ANOTHER CALLED à | INTERSPECIFIC VARIATION |
SAME SPECIES DIFFER FROM EACH OTHER | CALLED INTRASPECIFIC VARIATION. TWINS SAME DNA. |
REPRESENTATIVE OF THE POPULATION / | RELIABLE).SAMPLING BIAS CHANCE |
ELIMINATE SAMPLING BIAS/ ELIMINATE | HUMAN INVOLVEMENT. RANDOM (SAMPLING). |
THE GREATER THE SAMPLE | SIZE THE MORE RELIABLE. |
TEST ALLOW US TO DECIDE | WHETHER ANY VARIATION OBSERVED DUE TO CHANCE OR OTHER. |
VARIATION CAUSED BY – GENETIC | , ENVIRONMENTAL/BOTH |
GENETIC DEFENCES DIFF IN GENES. | DIFFERENCES CHANGE FROM GENERATION TO GENERATION. |
GENETIC VARIATION | CAUSED BY MUTATIONS: |
RNADOM CHNAGES TO GENE | AND CHROM MAY ,OR MAY NOT BE PASSED ON TO NEXT GENERATION. |
MEIOSIS – NUCLEAR DIVISION FORMS | THE GAMETES. MIXES UP/ GENETIC INFO COZ IT PASSED DIFF GAMETES. |
FUSION OF GAMETES – | IN SEXUAL REPRODUCTION. OFFSPRING INHERIT / CHARACTERISTICS OF EACH PARENT |
FUSION GAMETES FERTILISATION | IS RANDOM PROCESS . CREATE VARIETY OF OFFSPRING. |
VARIETY IN ASEXUAL | REPRODUCTION VIA MUTATION . |
POULATION OF SEXUAL | REPRO MORE VARIED. |
ENVIRONMENTAL INFLUENCE | AFFECT THE WAY GENES ARE EXPRESSED. |
THE GENES SET LIMITS BUT THE | ENVIRONMENT DETERMINES WHERE LIMITS LIES. |
PLANT HAVE TALL GENE , SEED | GERMINATION, POOR LIGHT AND LOW SOIL NITROGEN. PLANT SHORT. |
ENVIRONMENTAL INFLUENCE ARE | / CLIMATIC CONDITIONS. |
(E.G. TEMP , RAINFALL , SUNLIGHT) | /SOIL CONDITIONS, PH, FOOD AVAILABILITY. |
BLOOD GROUP CONTROLLED | BY SINGLE GENE.PIE CHART. |
CONTINUUM. – CAHARCTERISTIC | JOIN TOGETEHR :HEIGHT AND MASS. |
(POLYGENE'S) CONTROL | HEIGHT MASS. |
A BELL SHAPED CURVE – | NORMAL DISTRIBUTION CURVE. |
SHOW S NUMBER OF PEOPLE | IN A PARTICULAR SAMPLE WITH DIFF HEIGHTS. |
STANDARD DEVIATION= THE SQUARE ROOT OF THE SUM | OF THE MEASURE VALUE – THE MEAN VALUE^2 / THE TOTAL NUMBER ROOF VALUES IN THE SAMPLE. |
1. CALCULATE THE MEAN 2. | SUBTRACT THE MEAN FORM EACH OF THE VALUES |
3. COZ SOME NEGATIVE HAVE | TO SQUARE ALL THE NUMBERS. |
4. ADD ALL SQUARED NUMBERS | TOGETHER. 5.DIVIDE THE TOTAL BY AMOUNT. |
REMEMBER TO SQUARE | ROOT IN THE END. |
DOUBLE HELIX IN | DNA RECOGNISABLE. |
DNA DETERMINES INHERITED | CHARACTERISTICS /HAS A LOT OF INFORM/ IN FORM GENETIC CODE. |
DNA MADE FROM : DEOXYRIBOSE, | PHOSPHATE GROUP, ORGANIC BASE. |
CONDENSATION REACTION | BETWEEN A PHOSPHATE GROUP AND A DEOXYRIBOSE SUGAR. |
COMBINED DUE TO | CONDENSATION REACTION /(MONONUCLEOTIDE |
LONG CHAIN MONO | NUCLEOTIDE POLYNUCLEOTIDE. |
SINGLE RING BASES – | CYTOSINE AND THYMINE. |
DOUBLE RING BASES – | ADENINE AND GUANINE. |
DNA MADE OF 2 STRANDS | OF NUCLEOTIDES ,(POLYNUCLEOTIDE'S.) |
EACH 2 STRANDS LONG, AND | JOINED BY HYDROGEN BONDS / BETWEEN BASES. |