Mendel crossed a pure tall pea plant (TT) with a pure short pea plant (tt) and obtained all tall plants in $F_1$ generation. (a) What is the gene combination present in the plants of $F_1$ generation? (b) Give reason why only tall plants are observed in $F_1$ progeny. (c) What will be the ratio of the plants obtained in the $F_2$ generation when $F_1$ plants are self-pollinated?

(a) The gene combination present in the plants of $F_1$ generation is Tt. (b) Only tall plants are observed in $F_1$ progeny because the tall allele (T) is dominant over the short allele (t). (c) The ratio of the plants obtained in the $F_2$ generation when $F_1$ plants are self-pollinated is 3:1 (3 tall: 1 short).

Question 232 marksVery Short AnswerSection B

$F_1$

Heredity

Heredity

Official answer

F_1

Analysis and explanation

This question requires the student to understand the concept of Mendelian inheritance and the laws of segregation and independent assortment. The student must be able to analyze the given information and apply the concepts to arrive at the correct answer.

Question details

Q23 of 39 questions

Board: CBSE
Class: Class 10
Subject: Science
Year: 2023
Section: Section B
Marks: 2
Type: Very Short Answer
Chapter: Heredity
Topic: $Heredity$
Bloom's level: Understanding
Syllabus topic: $Heredity$

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Frequently asked questions

$How many marks does this question carry in CBSE Class 10 Science 2023?$

$This question carries 2 marks in the CBSE Class 10 Science 2023 examination.$

$Which chapter does this question come from in Science?$

$This question is from the chapter "Heredity" in the CBSE Class 10 Science syllabus.$

$What topic does this question cover in Science?$

$This question covers the topic "Heredity" from CBSE Class 10 Science.$

$What type of question is this in the CBSE Class 10 Science 2023 paper?$

$This is a Very Short Answer question from Section B in the CBSE Class 10 Science 2023 paper.$