Homologous chromosomes are a couple of one maternal and one paternal chromosome, paired up during fertilization in a diploid cell. Two copies of one chromosome, linked together in the centromere are called sister chromatids. … The homologous chromosomes are similar in size, shape, and centromere location.
What is the difference between homologous chromosomes and sister chromatids quizlet?
Homologous chromosomes contain the same gene loci but may have different alleles of a particular gene. Sister chromatids are identical copies of each other produced during DNA replication. One homologous chromosome comes from the father, and the other comes from the mother.
What is the same in all parts of homologous chromosomes?
Homologous chromosomes are similiar but not identical. Each carries the same genes in the same order, but the alleles for each trait may not be the same. … The maternal and paternal chromosomes in a homologous pair have the same genes at the same loci, but possibly different alleles.
What is true for both sister chromatids and homologous chromosomes?
Homologous chromosomes and sister chromatids are both identical copies of each other. Sister chromatids are only formed during mitosis. Homologous chromosomes are formed during meiosis. Homologous chromosomes are identical copies of each other.
What are sister chromatids made of?
The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere. Then, a structure called the mitotic spindle begins to form. The mitotic spindle is made of long proteins called microtubules that begin forming at opposite ends of the cell.
How do you know if two cells are homologous?
The two chromosomes in a homologous pair are very similar to one another and have the same size and shape. Most importantly, they carry the same type of genetic information: that is, they have the same genes in the same locations.
What does it mean when chromosomes are considered homologous?
1. A pair of chromosomes made up of two homologs. Homologous chromosomes have corresponding DNA sequences and come from separate parents; one homolog comes from the mother and the other comes from the father. Homologous chromosomes line up and synapse during meiosis. 2.