Selective Breeding
Bayani Gaba-gaba
Long before scientists understood DNA, farmers and breeders were shaping the plants and animals around them. By choosing individuals with the best traits and breeding them together, generation after generation, humans have transformed wild grasses into high-yielding wheat and wolves into hundreds of dog breeds.
In this lesson you will learn how selective breeding works in both plants and animals, examine real examples of the process, and consider the risks that come with narrowing a population's gene pool.
Manufura
- Understand how selective breeding can develop plants with desired characteristics
- Understand how selective breeding can develop animals with desired characteristics
Taswirar tunani
An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.
Bude taswirar tunani a cikin manhaja
Katunan tunawa
Gwaji mai sauri kan abin da ake jarraba a wannan batu.
Yi atisayen wadannan katuna 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 Selective Breeding. 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.
- What is selective breeding? A) Breeding organisms that are naturally selected by the environment B) Choosing organisms with desired traits and breeding them over many generations C) Genetically modifying organisms in a laboratory D) Allowing organisms to breed randomly Answer: B
- Which of the following is a risk of selective breeding? A) Increased genetic diversity B) Organisms become better adapted to the wild C) A reduced gene pool and increased chance of genetic defects D) Faster evolution of new species Answer: C
- Wild brassica has been selectively bred into broccoli by selecting for which feature? A) Large leaves B) Large flower buds C) Large terminal buds D) Thick stems Answer: B
- A farmer selectively breeds sheep for thick wool. Which step must be repeated? A) Cross the sheep with wild sheep once B) Select and breed the woolliest sheep over many generations C) Genetically modify the sheep's DNA D) Feed the sheep a high-protein diet Answer: B
- What does the term 'gene pool' mean? A) The total number of genes in one organism B) The total variety of alleles in a population C) The number of chromosomes in a cell D) The location of genes on a chromosome Answer: B
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 Selective Breeding? 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.
