What is the difference between chromosomes chromatids and homologous chromosomes quizlet?
chromosome is DNA tightly coiled around histones (proteins) homologous chromosomes are two different copies of the same chromosome, and sister chromatids are two identical copies of a chromatin connected by a centromere.
What is the difference between chromosomes and chromatids quizlet?
Chromosomes are the separate pieces of DNA in a cell. And Chromatids are identical pieces of DNA held together by a centromere.
What is the difference between homologous and non homologous chromosomes?
The primary difference between these two chromosomes – homologous and non-homologous lies in their constituency of alleles. Homologous chromosomes consist of alleles of the same gene type found in the same loci unlike non-homologous chromosomes, which constitute alleles of varying gene types.
What are the differences in homologous chromosomes?
The two chromosomes in a homologous pair are very similar to one another and have the same size and shape. … Aside from small regions of similarity needed during meiosis, or sex cell production, the X and Y chromosomes are different and carry different genes. The 44 non-sex chromosomes in humans are called autosomes.
What are homologous chromosomes quizlet?
Homologous chromosomes are chromosome pairs, one from each parent, that are similar in length, gene position and centromere location. … Homologous chromosomes are similar but not identical. Each carries the same genes in the same order, but the alleles for each trait may not be the same.
What is the main difference between binary fission and mitosis quizlet?
Binary fission occurs among prokaryotes (cells that do not contain a nucleus). Mitosis occurs among eukaryotes (cells that have a nucleus). Binary fission does not include spindle formation (mitotic apparatus) and sister chromatids in its process making it a faster means of cellular division than mitosis.
What is the main difference between binary fission and mitosis Why does this difference exist?
Binary Fission Versus Mitosis
|A simple, rapid process.||A complex process that requires more time than binary fission.|
|No spindle apparatus is formed. DNA attaches to the cell membrane prior to division.||A spindle apparatus is formed. DNA attaches to the spindle for division.|
What is the difference between a chromatid and a sister chromatid?
Chromatids are two fibre strands which are fused together by a lone centromere, produced from the duplication of the chromosome in the early stages of cell division. “Chromatids” are terms used in the process of either meiosis or mitosis. … Sister chromatids are two identical copies of a chromatid.