What are the 4 types of chromosomes?
There are four main types of chromosomes: metacentric, submetacentric, acrocentric, and telocentric.
What are the parts of chromosome?
A chromosome has generally 8 parts; Centromere or primary constriction or kinetochore, chromatids, chromatin, secondary constriction, telomere, chromomere, chromonema, and matrix.
What are chromosome 4 traits?
Gene mutations on chromosome 4 have been linked to genetic disorders and identified in several types of cancer. Examples of conditions associated with gene mutations on chromosome 4 include neurological and neurodegenerative disorders such as Parkinson’s disease, Huntington’s disease and narcolepsy.
What are the main components of the chromosome?
The major chemical components of the chromosome are DNA, RNA (nucleic acids), and proteins (histones and nonhistones).
What are the 4 stages of the cell cycle?
In eukaryotes, the cell cycle consists of four discrete phases: G1, S, G2, and M. The S or synthesis phase is when DNA replication occurs, and the M or mitosis phase is when the cell actually divides. The other two phases — G1 and G2, the so-called gap phases — are less dramatic but equally important.
What are the four 4 types of chromosomes according to the position of centromere?
On the basis of the location of the centromere, chromosomes are classified into four types: metacentric, submetacentric, acrocentric, and telocentric.
What are the four phases of mitosis in the correct order?
These phases are prophase, prometaphase, metaphase, anaphase, and telophase.
What are the 6 parts of chromosomes?
6 Main Parts of a Chromosome
- Part # 1. Pellicle and Matrix:
- Part # 2. Chromatids, Chromonema and Chromomeres:
- Part # 3. Centromeres (= Primary constriction):
- Part # 4. Secondary Constriction:
- Part # 5. Satellite:
- Part # 6. Telomere:
Can you have 4 chromosomes?
Mosaic trisomy 4 is very rare; only a few cases have been reported. Other changes in the number or structure of chromosome 4 can have a variety of effects including delayed growth and development, intellectual disability, distinctive facial features, heart defects, and other medical problems.
What are the four changes in chromosome structure?
deletion is where a section of a chromosome is removed. translocation is where a section of a chromosome is added to another chromosome that is not its homologous partner. inversion is where a section of a chromosome is reversed. duplication occurs when a section of a chromosome is added from its homologous partner.