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प्रश्न
Explain the Term Zygotene
उत्तर
Zygotene: Pairing of homologous chromosomes (synapsis) occur in this stage. Each pair is bivalent.
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संबंधित प्रश्न
Choose the correct answer:
In an interphase cell chromosome are as _____________
Choose the correct answer:
Chromosomes number is halved in _____________
Mention the contribution of the scientist given below in the study of chromosome:
Strasburger
Choose the correct answer:
Chromosome number of man is _____________
Enumerate the various changes that occur in the nucleus of the cell during anaphase of mitotic division.
Explain the Term Spindle
Explain the Term Chromosomes
Complete the following sentence with appropriate word :
Polytene chromosomes are found in _________ of fly larvae.
Multiple Choice Question:
The disappearance of spindle and uncoiling of chromosomes takes place in
Name the following:
Pairs of chromosomes, present in human egg cells.
With the help of a neat labelled diagram, describe the structure of chromosome.
In humans, the sex chromosome complement is
______ is a sudden permanent heritable change that can occur in the gene, in the chromosome or chromosome number.
Read the following statements and select the correct option.
Statement I: The densely packed transcriptionally active, light staining region of chromatin is known as 'Heterochromatin'.
Statement II: The loosely packed, dark staining transcriptionally inactive region of chromatin is known as 'Euchromatin'.
Differentiate between X-chromosome and Y-chromosome with reference to –
- length of non-homologous regions
- type as per the position of the centromere
Define Aneuploidy.
Rewrite the correct form of the statement by changing the first or last word only:
Duplicated chromosomes remain attached at a point termed as centrosome.
