Genes, DNA & chromosomes | Heredity & Evolution | Biology | Khan Academy

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2019-08-06に共有

Let's learn what genes, DNA & chromosomes are
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Created by Mahesh Shenoy

コメント (21)

@vaishalisathe3715 3年前

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@darshananath6806 2年前

YOU ARE LITERALLY A SAVIOUR! THESE ARE SO MUCH COMPLICATEDLY WRITTEN IN OUR BOOKS AND YOU JUST EXPLAINED IT IN A FAIRLY UNDERSTANDABLE MANNER IN JUST 12 MIN! THANKS, A LOT, SIR JI
@user-kx5bu4is8f 5ヶ月前

CRYING SCREAMIMG THROWING UP, THABKYOU SIR SO SO MUCH
@Cellate 7ヶ月前

DNA : DNA is a thread like structure present inside the nucleus that contains instructions to make an organism (and all its parts incluing all the various cells) and its characteristic features. Chromosome : Long strands of DNA coiled up in a compact form. Total chromosomes : 46 chromosomes in total (constituting 23 from male parent and 23 from female parent) Gene: Specific parts of DNA that contain instructions to make a specific protein. Variation is the most important advantage of sexual reproduction over asexual. 12:28 Enjoyed the lecture very much 😊
@kanikadahiya120 2年前

HOMEWORK :- 📌 D.N.A is a chemical molecule which carries traits in coded form. These are found in the nucleus of the cell. 📌 Chromosomes are long thread like coiled up D.N.A. which contains hereditary information in the form of gene. 📌 Human cells have 23 pairs of chromosomes OR total 46 chromosomes. 📌 Genes are the part of chronological which controls a specific biological function. 📌 Main advantages of sexual reproduction over asexual are :- • In sexual reproduction there are two parents involved , due to this the child got two types of DNA , which makes the offspring unique. • In sexual reproduction , there are high chances of variation which makes life of the species more existable.
@GaneshKumar-lp9pw 3年前

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@bobbetts4735 1年前

Excellent video and tuition. As a curious 78 year old found your explanation very clear and easy to understand. Thankyou.
@bksarita6120 2年前

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@snehasalunkhe166 3年前

I watched all the videos on YouTube of this topic but the only one by whom I understood the concept was you sir thanks a lot lot and lot sir❤️❤️🙏
@bholashankarprasad9838 3年前

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@heenakousar1000 3年前

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@Clive.kut2221 6ヶ月前

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@samarjaiswal4115 4年前

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@shampamannan1869 3年前

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@krishnamahajan9496 3年前

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@anu_arii 3年前

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@samriddhgupta2006 2年前

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@AvineshDisen 3年前

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@ehannaseer7085 3年前

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@SeemaSingh-oi6ry 3年前

The explanation is superb sir You are a very good teacher