Chromosomes And Genes
Gbogbo ọrọ náà
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.
Ebumnobi
- 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
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Chromosomes And Genes. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- 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
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Chromosomes And Genes? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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