Principles of Inheritance and Variation
CBSE · Class 12 · Biology
Flashcards for Principles of Inheritance and Variation — CBSE Class 12 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.
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Get startedWhat is genetics, and how do inheritance and variation differ?
Answer
Genetics is the branch of biology that deals with inheritance and variation. Inheritance is the process by which characters are passed from parent to progeny; it is the basis of heredity. Variation is…
आनुवंशिकी क्या है और वंशानुक्रम और भिन्नता में क्या अंतर है?
Answer
आनुवंशिकी (Genetics) जीवविज्ञान की वह शाखा है जो वंशानुक्रम और भिन्नता से सम्बन्धित है। वंशानुक्रम वह प्रक्रिया है जिसके द्वारा लक्षण माता-पिता से संतति में आते हैं; यह आनुवंशिकता का आधार है। भिन्नता …
आनुवंशिकता के अध्ययन में मेंडल का काम इतना महत्वपूर्ण क्यों था?
Answer
ग्रेगर मेंडल ने 1856 से 1863 तक सात वर्षों तक बगीचे के मटर पर संकरण प्रयोग किए और वंशानुक्रम के नियमों का प्रस्ताव किया। उन्होंने बड़े नमूना आकार, सावधानीपूर्वक क्रॉस और सांख्यिकीय विश्लेषण का उपयोग क…
Why was Mendel's work so important in the study of heredity?
Answer
Gregor Mendel conducted hybridisation experiments on garden peas for seven years from 1856 to 1863 and proposed the laws of inheritance. He used large sample sizes, careful crosses, and statistical an…
What was special about the pea plants Mendel selected for his experiments?
Answer
Mendel selected 14 true-breeding pea plant varieties as contrasting pairs. The selected traits included tall or dwarf stem height, violet or white flower colour, axial or terminal flower position, inf…
मेंडल ने अपने प्रयोगों के लिए मटर के पौधों में क्या विशेष चुना था?
Answer
मेंडल ने मटर की 14 सच्ची प्रजनन वाली किस्मों को विपरीत जोड़े के रूप में चुना। चुनी गई विशेषताओं में लंबा या बौना तना की ऊँचाई, बैंगनी या सफेद फूलों का रंग, अक्षीय या टर्मिनल फूलों की स्थिति, फूला हुआ …
सच्ची प्रजनन रेखा को परिभाषित करें।
Answer
सच्ची प्रजनन रेखा वह होती है जो लगातार स्वपरागण के बाद कई पीढ़ियों तक स्थिर लक्षण-उत्तराधिकार और लक्षण-अभिव्यक्ति दिखाती है। ऐसी रेखा हमेशा अध्ययन के पात्र के लिए समान लक्षण वाले संतति पैदा करती है। म…
Define true-breeding line.
Answer
A true-breeding line is one that, after continuous self-pollination, shows stable trait inheritance and expression for several generations. Such a line always produces offspring with the same trait fo…
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- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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