Are homologous chromosomes two sister chromatids?
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 holds the sister chromatids tightly together?
During DNA duplication in the S phase, each chromosome is replicated to produce two identical copies, called sister chromatids, that are held together at the centromere by cohesin proteins. Cohesin holds the chromatids together until anaphase II.
How are homologous chromosomes and sister chromatids different?
The key difference between homologous chromosomes and sister chromatids is that homologous chromosomes may not carry identical information all the time whereas sister chromatids carry identical information all the time.
Is a homologous pair one chromosome?
A homologous chromosome pertains to one of a pair of chromosomes with the same gene sequence, loci, chromosomal length, and centromere location. A homologous pair consists of one paternal and one maternal chromosome.
How many sister chromatids will be found in a nucleus at prophase of mitosis?
For humans, this means that during prophase and metaphase of mitosis, a human will have 46 chromosomes, but 92 chromatids (again, remember that there are 92 chromatids because the original 46 chromosomes were duplicated during S phase of interphase).
Which is a homologous chromosome pair Brainly?
Answer: A homologous chromosome pertains to one of a pair of chromosomes with the same gene sequence, loci, chromosomal length, and centromere location. A homologous pair consists of one paternal and one maternal chromosome. In humans, there are a total of 46 chromosomes in the nucleus of a somatic cell.