Table of Contents
- 1 What is initiation of assembly of mitotic spindle?
- 2 Where does the assembly of spindle microtubules start?
- 3 Which structure helps in assembly of mitotic spindle?
- 4 What are the component of the mitotic spindle?
- 5 How are spindle microtubules attached to chromosomes quizlet?
- 6 In which phase of mitosis does spindle microtubules attach to kinetochores quizlet?
- 7 What is the mitotic spindle quizlet?
- 8 What is the mitotic spindle and what is it made of?
What is initiation of assembly of mitotic spindle?
Answer-(4) Initiation of assembly of mitotic spindle occurs during Prophase of mitosis.
Where does the assembly of spindle microtubules start?
prophase
The mitotic spindle begins to self-assemble in the cytoplasm during prophase. In animal cells, each of the replicated centrosomes nucleates its own array of microtubules, and the two sets of microtubules interact to form the mitotic spindle.
Where does the microtubules of the mitotic spindle are attached?
Long protein fibers called microtubules extend from the centrioles in all possible directions, forming what is called a spindle. Some of the microtubules attach the poles to the chromosomes by connecting to protein complexes called kinetochores.
Which structure helps in assembly of mitotic spindle?
Microtubules
Microtubules the proteinanceous components of the cells cytoplasm help in the initiation of the assembly of mitotic spindle.
What are the component of the mitotic spindle?
The mitotic spindle is a special device essential for chromosome segregation ( mitosis) during cell division. It consists of three parts, chromosomes, two asters and a spindle region (Fig. 1). The overall shape of the mitotic spindle is due to microtubules, which are made of α and β-tubulin subunits.
What is the mitotic spindle made of?
The mitotic spindle is a highly dynamic molecular machine composed of tubulin, motors, and other molecules. It assembles around the chromosomes and distributes the duplicated genome to the daughter cells during mitosis.
How are spindle microtubules attached to chromosomes quizlet?
Spindle microtubules attach to chromosome centromeres. Chromosomes line up on metaphase plate. Microtubules from opposite poles attach to kinetochores of sister chromatids.
In which phase of mitosis does spindle microtubules attach to kinetochores quizlet?
Prometaphase: * microtubules attach to kinetochores.
What does the mitotic spindle consist of?
Abstract. The mitotic spindle, due to its striking form, has been imaged for well over 100 years. Composed largely of microtubules and chromosomes, the spindle also contains numerous proteins whose roles include biochemical and biophysical regulation of mitosis.
What is the mitotic spindle quizlet?
An assemblage of microtubules and associated proteins that is involved in the movements of chromosomes during mitosis.