Cytological evidence to Mendel-s law of segregation can be observed inAnaphase-I-Anaphase-II-Metaphase-I-Metaphase-II-

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Standard XII

Biology

The Chromosome Theory of Inheritance

Cytological e...

Question

Cytological evidence to Mendel’s law of segregation can be observed in

Anaphase-I

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Anaphase-II

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Metaphase-I

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Metaphase-II

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Solution

The correct option is A
Anaphase-I

In anaphase-I, the two alleles of the gene get separated as homologous pair of chromosomes separate at this stage. Parallel behaviour of genes and chromosomes was first observed by Sutton and Boveri and they used chromosome movement to explain Mendel's laws.

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Question 2

At which stage of meiosis does the genetic constitution of gametes is finally decided
(a) Metaphase-I
(b) Anaphase-II
(c) Metaphase-II
(d) Anaphase-I

In which one of the following options the stages of mitosis have been given in correct sequence ?
(a) Prophase, metaphase, telophase, anaphase
(b) Prophase, metaphase, anaphase, telophase
(c) Anaphase, telophase, prophase, metaphase
(d) Telophase, anaphase, prophase, metaphase

Q. Read the below given statements and identify the stages of meiosis for which these statements are true.
A. Microtubules from the opposite poles of spindle attach to the kinetochore of homologous chromosomes.
B. Microtubules from opposite poles of spindles get attached to the kinetochores of sister chromatids.

\begin{matrix} A & B (1) & Anaphase II & Metaphase II (2) & Anaphase I & Metaphase II (3) & Metaphase I & Metaphase II (4) & Metaphase I & Anaphase I \end{matrix}

Cytological evidence to Mendel’s law of segregation can be observed in

Given below are sets of five terms each. Rewrite the terms in correct order In a logical sequence.

(i) Anaphase, Telophase, Prophase. Metaphase, Interphase.

(ii) Karyokinesis, S - phase, Cytokinesis, G₁phase, G₂ phase.

(iii) Metaphase, Telophase, Prophase, Anaphase, Cytokinesis.

Cytological evidence to Mendel’s law of segregation can be observed in

The correct option is A Anaphase-I In anaphase-I, the two alleles of the gene get separated as homologous pair of chromosomes separate at this stage. Parallel behaviour of genes and chromosomes was first observed by Sutton and Boveri and they used chromosome movement to explain Mendel's laws.

The correct option is A
Anaphase-I

In anaphase-I, the two alleles of the gene get separated as homologous pair of chromosomes separate at this stage. Parallel behaviour of genes and chromosomes was first observed by Sutton and Boveri and they used chromosome movement to explain Mendel's laws.