Advertisements
Advertisements
प्रश्न
Classify the chromosomes on the basis of position of centromere.
Advertisements
उत्तर
Types of Chromosomes :
According to the position of the centromere, chromosomes are classified into following types
Metacentric : If the centromere is situated in the middle of the chromosomes it is called metacentric chromosomes.
Sub-metacentric : If the centromere is situated some distance away from the middle it is called submentacentric chromosomes.
Acrocentric : If the centromere is situated near the end of the chromosomes it is called acrocentric chromosome
Telocentric : If the centromere is situated at the tip of the chromosome it is called telocentric chromosome.
APPEARS IN
संबंधित प्रश्न
If the number of chromosomes in an endosperm cell is 27, what will be the chromosome number in the definitive nucleus?
- 9
- 18
- 27
- 36
A male honeybee has 16 chromosomes whereas its female has 32 chromosomes. Give one reason.
An allohexaploidy contains
If the haploid number in a cell is 18. The double monosomic and trisomic number will be
A B B C C D E F G H I
From the above figure identify the type of mutation and explain it.
Mention the name of man-made cereal. How it is formed?
Read the following statements regarding 'X and Y' chromosomes and select the correct option.
P - Due to presence of large amount of euchrornatin X chromosome is genetically more active.
Q - Due to presence of small amount of heterochromatin Y chromosome is genetically more active.
Which of the following statements indicates parallelism in genes and chromosomes?
- They occur in pairs.
- They segregate during gamete formation.
- They show linkage.
- Independent pairs segregate independently.
During mitosis, chromosomes distribution to the daughter cell is ______.
Which of the following phase follows S and G2 phases of interphase?
