Monohybrid Inheritance
Bayani Gaba-gaba
Why does a calf from two hornless parents sometimes grow horns? Why can two ordinary-looking cereal plants give some drought-tolerant offspring and some that wilt in the first dry spell? The answer lies in genes, the units of inheritance passed from parent to offspring. When a single gene controls one feature, we can actually predict the offspring and the ratios in which they appear, which is exactly what a farmer who is planning a breeding programme needs to know.
In this lesson you will learn the language of inheritance: chromosomes, genes and alleles, and what it means for an allele to be dominant or recessive. You will draw genetic diagrams, or Punnett squares, to predict the results of simple crosses and work out the 1:1 and 3:1 ratios that examiners ask about. Finally you will see why the difference between an animal's genotype and its phenotype matters so much when choosing which animals and plants to breed from.
Manufura
- (a) define the terms chromosome, gene, allele, homozygous, heterozygous, dominant and recessive.
- (b) calculate and predict the results of simple genetic crosses involving 1:1 and 3:1 ratios.
- (c) explain the meaning of the terms genotype and phenotype and assess their importance in animal and plant breeding.
Darasin Sauti
Saurari wannan darasi a cikin manhaja
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 Monohybrid Inheritance. Yanzu da kuka bincika mahimman ra'ayoyi da ra'ayoyi, 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 term describes an organism that has two different alleles of a gene, such as Hh? A. Homozygous B. Heterozygous C. Dominant D. Recessive Answer: B
- The allele for no horns, H, is dominant over the allele for horns, h. What is the phenotype of an animal with the genotype Hh? A. Horns B. No horns C. Half-formed horns D. It cannot be predicted Answer: B
- Two heterozygous cattle (Hh) are crossed. What is the expected ratio of offspring with no horns to those with horns? A. 1:1 B. 1:2 C. 3:1 D. 1:0 Answer: C
- Which genotype is homozygous recessive? A. HH B. Hh C. hH D. hh Answer: D
- A drought-resistant cereal (D dominant) is crossed Dd x dd. What proportion of the offspring is expected to be drought resistant? A. None B. One quarter C. One half D. All Answer: C
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Ƙarin koyo daga tushe na buɗe
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Sashen littafi
Characteristics and Traits
Explain the relationship between genotypes and phenotypes in dominant and recessive gene systems
"Biology: Characteristics and Traits" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/12-2-characteristics-and-traits. Access for free at https://openstax.org/books/biology/pages/1-introduction
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Sashen littafi
Mendel’s Experiments and the Laws of Probability
Describe the scientific reasons for the success of Mendel’s experimental work
"Biology: Mendel’s Experiments and the Laws of Probability" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/12-1-mendels-experiments-and-the-laws-of-probability. Access for free at https://openstax.org/books/biology/pages/1-introduction
Wasu ƙungiyoyi ne suka wallafa su ƙarƙashin lasisin buɗe, kuma muna ambaton su yadda suka nema. Hanyoyin suna buɗe shafukansu.
Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Monohybrid Inheritance? 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.
