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2021-08-29 20:18:42 Types of Assisted Reproductive Technology
Some commonly used methods of ART include

1. In vitro fertilization (IVF) – one of the most common forms of ART is IVF. Here fertilization occurs outside the body.

2. Gamete intrafallopian transfer (GIFT) – It involves the transfer of sperms and eggs into the fallopian tube of a woman where fertilization takes place.

3. Zygote intrafallopian transfer (ZIFT) – also known as tubal embryo transfer is somewhat similar to IVF wherein fertilization takes place outside the body. The young embryo is then inserted into the fallopian tube and not the uterus.

4. Intracytoplasmic sperm injection (ICSI) – this technique is usually used for couples where the male is infertile. Sometimes it is also used for those with failed IVF attempts or even for older couples. Here the principle that is followed is that a single sperm is introduced into a mature egg, contrary to what is seen in conventional fertilization techniques wherein the sperm and egg is placed in a petri dish and the sperm fertilizes the egg on its own.

5. Artificial insemination – deliberate introduction of sperms into the female’s cervix or uterus to achieve pregnancy without sexual intercourse. It can of the following types:

Intrauterine insemination
Intracervical insemination
Intratubal insemination Open / Comment

2021-08-29 17:43:41 Doubtnut ke Study Channels par ab sirf Instant doubt solving hi nahi
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2021-08-29 13:06:38 Doubtnut ke Study Channels par ab sirf Instant doubt solving hi nahi
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2021-08-29 11:39:39 𝐀𝐂𝐓𝐈𝐕𝐈𝐓𝐘 𝐒𝐄𝐑𝐈𝐄𝐒 𝐎𝐅 𝐌𝐄𝐓𝐀𝐋𝐒
#CHEMISTRY
Potassium>Sodium>Calcium>Magnesium>Aluminium>(Carbon)>Zinc>Iron>Tin>Lead>(Hydrogen)>Copper>Mercury>Silver>Gold>Platinum


𝑴𝑵𝑬𝑼𝑴𝑶𝑵𝑰𝑪𝑺

Please Stop Calling Me A Cute Zebra I Like Her Call Smart Goat

Please Stop Calling Me A Carless Zebra Instead Try Learning How Copper Miners Save Gold Pit

Note that Carbon and Hydrogen are non-metals, used as a baseline. Open / Comment

2021-08-29 10:32:49 Important
Please attend today's planning session for Emerge, Please note this is a compulsory important session for anyone studying in current emerge batch or planning to start from the batch starting from 1st Sept from Anshul Sir.

2pm today!!

https://unacademy.com/course/emerge-batch-planning/V7MVDP5T Open / Comment

2021-08-29 06:56:54 Doubtnut ke Study Channels par ab sirf Instant doubt solving hi nahi
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2021-08-28 21:13:01 Very Important Points, Must read once

Evidences from comparative morphology and anatomy :-

Examples of homologous organs:

(i) Forelimbs of mammals
(ii) Thorn of Bougainvillea and tendril of Cucurbita both are modification of axillary bud.
(iii)Vertebrate hearts or brains
(iv)Mouth parts of insects :
Cockroach Honey bee Mosquito
(Biting & chewing) (Chewing & lapping) (Piercing & Sucking)
(v) Testes in male and ovaries in female
(vi) Potato and Ginger - both are modified shoot
(vii) Radish and Carrot - both are modified roots

Examples of Analogous organs :

(i) Wings of butterfly and birds
(ii) Eye of the octopus and of mammals
(iii) Flippers of Penguins and Dolphins
(iv) Sweet potato (root modification) and potato (stem modification)
(v) Sting of bee and scorpion
(vi) Chloragogen cells of earthworm and liver of vertebrates.

Trick and Mnemonics
Biology Open / Comment

2021-08-28 13:28:30 Doubtnut ke Study Channels par ab sirf Instant doubt solving hi nahi
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2021-08-28 04:51:13 Doubtnut ke Study Channels par ab sirf Instant doubt solving hi nahi
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