Variation
Bayani Gaba-gaba
Line up thirty people from the same class and ask them their blood group. You will get four answers and nothing in between: nobody is halfway between group A and group O. Now ask the same thirty to stand against a wall and measure them. This time no two answers are quite alike, and every value between the shortest and the tallest is filled in by somebody. The same room, the same species, two completely different shapes of difference.
Behind both of them sit the two causes this topic names: the alleles an organism inherited, and the conditions it grew up in. You will learn how mutation creates something genuinely new while reproduction only reshuffles what already exists, why a suntan is never passed to a child, and why almost every characteristic you can actually see is the work of both causes together. Then you will handle the numbers, because on this course variation is as much a data skill as a biology one: building a frequency table, estimating a mean from grouped readings, choosing a sample that can carry a conclusion, and spotting the moment a claim runs further than the evidence behind it.
Manufura
- The causes of variation include: genetic variation - different characteristics as a result of mutation or reproduction; environmental variation - different characteristics caused by an organism’s environmental (acquired characteristics).
Taswirar tunani
An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.
Bude taswirar tunani a cikin manhaja
Takardar Darasi
Cikakken Bayanin Darasi Yana Kan Manhajar Green Bridge
Sami manhajar Green Bridge CBT a wayarka ko kwamfutarka domin cikakken laburaren IGCSE: takardun jarrabawar baya, tsarin kimantawa, taswirar tunani, katunan karatu da darussan sauti.
Nazarin Darasi
Barka da kammala darasi akan Variation. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which characteristic of a human population falls into separate groups with no intermediates? A. Body mass B. Hand span C. ABO blood group D. Height Answer: C
- An unbroken range of values for a characteristic in a population is usually caused by A. one gene only, with no environmental effect B. many genes together with environmental effects C. the environment only, with no genetic effect D. a single mutation in one individual Answer: B
- Which of these is an acquired characteristic? A. The ability to roll the tongue B. A suntan gained during a summer holiday C. Blood group A D. Brown eye colour Answer: B
- In a sample of 200 students, 90 were blood group O. What percentage of the sample was blood group O? A. 9% B. 22.5% C. 45% D. 90% Answer: C
- Which process is the original source of new alleles in a population? A. Sexual reproduction B. Asexual reproduction C. Mutation D. Environmental variation Answer: C
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Variation? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
Sauke Manhajar Daga Google Playstore
Duk abin da kake buƙata don yin fice a JAMB, WAEC & NECO.
