Inheritance
Bayani Gaba-gaba
Why do children look like their parents but never look exactly the same? The answer lies in the way genes are inherited, shuffled during cell division, and expressed as visible characteristics. Inheritance is also the mechanism behind evolution and the growing problem of antibiotic resistance.
In this lesson you will learn how chromosomes carry genes, how alleles determine phenotype, and how to use Punnett squares to predict the outcomes of monohybrid crosses. You will also compare mitosis and meiosis, explore mutation and variation, and explain Darwin's theory of natural selection.
Manufura
- Understand that the genome is the entire DNA of an organism and that a gene is a section of a molecule of DNA that codes for a specific protein
- Understand that the nucleus of a cell contains chromosomes on which genes are located
- Understand how genes exist in alternative forms called alleles which give rise to differences in inherited characteristics
- Understand the meaning of the terms: dominant, recessive, homozygous, heterozygous, phenotype and genotype
- Understand that most phenotypic features are the result of polygenic inheritance rather than single genes
- Describe patterns of monohybrid inheritance using a genetic diagram
- Understand how to interpret family pedigrees
- Predict probabilities of outcomes from monohybrid crosses
- Understand how the sex of a person is controlled by one pair of chromosomes, XX in a female and XY in a male
- Describe the determination of the sex of offspring at fertilisation using a genetic diagram
- Understand how division of a diploid cell by mitosis produces two cells that contain identical sets of chromosomes
- Understand that mitosis occurs during growth, repair, cloning and asexual reproduction
- Understand how division of a cell by meiosis produces four cells, each with half the number of chromosomes
- Understand how random fertilisation produces genetic variation of offspring
- Know that in human cells the diploid number of chromosomes is 46 and the haploid number is 23
- Understand that variation within a species can be genetic, environmental, or a combination of both
- Understand that mutation is a rare, random change in genetic material that can be inherited
- Explain Darwin's theory of evolution by natural selection
- Understand how resistance to antibiotics can increase in bacterial populations
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 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.
- What is the diploid number of chromosomes in human body cells? A) 23 B) 46 C) 44 D) 92 Answer: B
- If a heterozygous tall plant (Tt) is crossed with a short plant (tt), what ratio of tall to short offspring is expected? A) 3:1 B) 1:1 C) 4:0 D) 1:3 Answer: B
- Which type of cell division produces gametes? A) Mitosis B) Meiosis C) Binary fission D) Fertilisation Answer: B
- A mutation in a gene is best described as: A) A change in chromosome number B) A change in the DNA base sequence C) The loss of an entire chromosome D) The addition of a new protein Answer: B
- Antibiotic resistance in bacteria is an example of: A) Artificial selection B) Genetic engineering C) Natural selection D) Selective breeding 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
Cell Division
Describe the structure of prokaryotic and eukaryotic genomes
"Biology: Cell Division" 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/10-1-cell-division. 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 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.
