Chromosomes, Genes And Proteins
Bayani Gaba-gaba
Inside almost every one of your cells is a full instruction manual for building you, written in DNA and packaged into chromosomes. The manual is divided into genes, and small differences between versions of a gene, called alleles, are why no two people (except identical twins) are exactly alike.
In this lesson you will see what chromosomes are made of, define a gene and an allele, and work out how the X and Y chromosomes decide whether a baby is a boy or a girl, predicting the familiar 1:1 ratio of sexes with a genetic diagram.
Manufura
- State that chromosomes are made of DNA, which contains genetic information in the form of genes
- Define a gene as a length of DNA that codes for a protein
- Define an allele as an alternative form of a gene
- Describe the inheritance of sex in humans with reference to X and Y chromosomes
- [Supplement] State that the sequence of bases in a gene determines the sequence of amino acids used to make a specific protein (knowledge of the details of nucleotide structure is not required)
- [Supplement] Explain that different sequences of amino acids give different shapes to protein molecules
Takardar Darasi
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Barka da kammala darasi akan Chromosomes, Genes And Proteins. 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.
- A gene is best defined as: A. a whole chromosome B. a length of DNA that codes for a protein C. an alternative form of an allele D. a type of cell Answer: B
- An allele is: A. a length of protein B. an alternative form of a gene C. a sex chromosome D. a type of nucleus Answer: B
- The sex chromosomes of a human male are: A. XX B. XY C. YY D. XXY Answer: B
- What is the approximate ratio of male to female babies born, and why? A. 3:1, because of dominance B. 1:1, because equal numbers of X and Y sperm are made C. 2:1, because Y sperm swim faster D. 1:0, because the mother decides sex Answer: B
- Chromosomes are made of: A. protein only B. DNA C. carbohydrate D. lipid Answer: B
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Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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