Principles of Inheritance & Variation - L10 | Unacademy NEET | LIVE DAILY | Biology | Sachin Sir

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Heredity is a process of transmission of traits from parents to their offspring either via asexual reproduction or sexual reproduction. These characteristics or traits are located on the chromosomes in the form of genes.

Gregor Johann Mendel is the Father of Genetics. Mendel proposed three laws after his experiments on the sweet pea plant (Pisum sativum).

1. Law of dominance- The effect of the recessive allele is masked by the dominant allele. Only the dominant allele expresses its phenotype.

For example: “Allele for tallness is dominant over the allele for dwarfism”.

2. Law of segregation of genes- Each individual possesses two alleles of a gene and each allele separates or segregates at the time of meiosis, that is, during the formation of gametes. The monohybrid cross (cross of a single trait) was used to explain the law of segregation of genes.

3. Law of independent assortment – It states that alleles for separate traits are passed independently from parents to the offspring. Mendel used a dihybrid (cross of two different traits) cross in order to explain independent assortment.

In this session, Dr. Sachin Kapur Sir discusse the topic: Sex Determination in Humans.

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[anonymous_otaku_]

Quote:-when life gives u a hundred reasons to cry, show life that u have thousand reasons to smile 😊😊😊

[dishasaini]

Kuch bache kh rhe hai ki sir sirf slides read kar rhe hai wrong bcoz information collect krke slides bnana bhi bahut mushkil kam hai aur fir yeah to hmare liye itni mehnat kr rhe hai to sachin sir and all unacademy teachers 😊

[mohammadibegum]

Sir hum ne to kbhi itna sequence me nhi padha
💞💞💞💞💞💞💞👍👍👍👍👍🌹🌹🌹🌹🌹🌹🌹🌹thank u sir ....
For making our topic diamond

[hanslachoudhary]

Hllo sir.... first of all, thank you 4 all of your lectures, with perfect language and methods.... very helpful 😊.

And a most important thing iss. .. I like ur Raja beta and Raja

[itsmesakshi]

Lecture start on 5:38 nice explanation

[MaMa-knqp]

Amazing session sir I got a lot of new things especially about foetus....

[imranamazumder]

I just started my class 12...i loved the vedio...i feel so interested while listening ur lecture

[daminiyadav]

sir aap ka sukriya Karne se ke liye mere pass koi sabdh nhi he Incredible lacture

[aakritiojha]

Crystal clear sir.thank you sir from the core of my heart...

[shardabhosale]

This lecture contains very unique and unknown points
Btw amazing lecture crystal clear😊
Thanku sir🙏🙏

[reshiadnan]

Y chromosome is called y just to follow alphabet iCal order after henkings XChromosome ..y chromosome was named by Steven..

[vaishalibhardwaj]

Iam speechless 😁😁. ...love u sir....iam very thankful to have u as my

[Anjali-K]

sir its awesome..heartly thanks to unacadmey..💗💗

[alfabalm]

Y chromosome known as y chromosome because x chromosome has counter part which is distinctly smaller so called as y chromosome

[prabhashkumar]

Sir aap Genetics ko bahut aasan bana diye hein 👍👍👍👍👍

[ManishShinde]

Evergreen lectures please don't delete ever

[NEET_UG_BRIGHT]

Thank you so much sir ❤️❤️❤️💓💖💓💓❤️❤️❤️❤️❤️❤️❤️❤️❤️

[astronod]

Thank you so much
Your all lectures Or notes are very helpful 😇

[jhakumud]

I have just started my class 12. 🙂 I am very happy to see such a great teacher like you.😆😆😆

[notification]

Due to time problem I can't able to attend live lecture..😔 your lecture is appreciable.... 😁🥰🥰🥰🥰🥰🥰thank u from core of heart