Advertisements
Advertisements
Question
Advertisements
Solution
Chromosomes are the thread like structures present in the nucleus of the cell. They are covered with a sheath made up of proteins and filled with granular matter called matrix. Inside the matrix, there are two threads called chromonemata.
The chromosome consists of two symmetrical strands called chromatids. Each chromosome consists of a distinct constriction called centromere which gets attached to the spindle network.
APPEARS IN
RELATED QUESTIONS
What is the number of chromosomes in the gametes of human beings?
Give appropriate biological or technical terms for the following :
The condition in which a pair of chromosomes carries similar alleles of a particular character.
Correct the following statement if there is any mistake:
Genes are specific sequences of bases on a chromosome .
Choose the correct answer:
Chromosomes appear at equator in ____________
Choose the correct answer:
Chromosomes number is halved in ____________
Explain the Term Centrioles
Explain the Term Spindle
Name the following:
The part of the cell associated with heredity.
Complete the following sentence with appropriate word :
The pairing of homologous chromosomes is called _______.
Multiple Choice Question:
The disappearance of spindle and uncoiling of chromosomes takes place in
Name the following:
Cells having a single set of chromosomes.
Name the following:
The pattern of arrangement of genes along a chromosome.
Complete the following sentence with appropriate word:
The number of chromosomes in humans is ________.
Identify the odd one:-
Describe the structure of sex chromosomes with the help of labelled diagram.
Identify the TRUE statements with respect to aneuploidy.
- When the chromosome number is not the exact multiple of the haploid set, it is described as aneuploidy.
- Aneuploidy is only addition of one or more chromosome(s) to the total number of chromosomes in a cell.
- Aneuploidy is further classified as hypoploidy and hyperploidy.
Generally, the recessive character is expressed only when present in a double recessive condition i.e. homozygous condition. However, a single recessive gene can express itself in human beings when the gene is present on ______
