0
What else can I help you with?
Does a gamete have paired chromosomes?
Yes. Chromosomes come in pairs and the child has them from both parents. Sometimes, one pair can have an extra third one. This conditions is possibly called Down Disease. Children are slower in development and have visible facial disorders. Their faces look different. You can try google that.
What is the difference between anaphase 1 and anaphase 2 in meiosis?
Hello, Anaphase 1 and 2 are both part of the process of meiosis, the division of sex cells, and they are both phases where chromosomes are being pulled apart by the centrioles. However, in anaphase one the chromosomes are lined up in homologous pairs, meaning that there are two chromosomes side by side, so when the centrioles pull they are separating two unconnected chromosomes. In anaphase two the chromosomes are lined up in single file. So the centrioles are pulling one chromosome apart. It eventually breaks the link at the centromere of the chromosome and results in two sister chromatids. Hope this is clear enough to understand!
What substances is stored in the nucleus?
DNA is stored in the nucleus and sent to other cells
During the process of fertilization which step happens first?
It is hard to say which step happens first in the process of human fertilization. The process leading up to it is usually slow. A man and a woman smile at each other. That is actually the first step. They get to know each other. The process goes on and on. A man grabs hold of a woman. Neither one has clothes on. He puts his penis in her vagina. Both push back and forth. Eventually, with them breathing hard, he ejaculates semen. Sperm work their way out from her vagina, through her uterus into her fallopian tubes. Meanwhile, her ovaries prepare an egg. It has a full set of chromosomes. It loses half of them. Unlike ordinarily cell division, only the nucleus divides. The egg cell ejects the nucleus called a polar body. The ovary ejects the egg. little cilia move the egg to the fallopian tubes. There it meets the sperm. The sperm breaks through the surface of the egg. The surface becomes hard so no more sperm will break through. The sperm swims through the egg until it reaches the nucleus. There it deposits its chromosomes. The chromosomes in the nucleus break apart and then reassemble. At that point the chromosomes of the new individual exist in the form the new person will have them the rest of his or her life. Which step happened first?
When do chromosomes become visible during mitosis?
They are visible during mitosis. During Prophase the DNA is compacted into Chromosomes while the intermediate filaments that make up the Nuclear Envelope are phosphorylated and it falls apart. Leaving behind the chromosomes, very easy to see throughout prophase, metaphase, anaphase and telophase (Until the nucleus reforms in both daughter cells and the chromosomes de-condense). Chromosomes are easy to see by definition, their name in greek literally means colored bodies, this mostly because the guy that saw them first had no idea what they were.
Are homologous chromosomes present in both mitosis and meiosis?
Yes, homologous chromosomes are present in both mitosis and meiosis. In mitosis, homologous chromosomes do not pair up, while in meiosis, homologous chromosomes pair up during prophase I.
What is a cell that contains both sets of a Homologous chromosomes?
A cell containing both sets of homologous chromosomes is called a diploid. One is usually taken from the mother and one from the father.
Does crossing over produces chromosomes that carry genetic information from both homologous chromosomes?
The question is not proper. Please define more. I assume you meant whether the genetic information is transferred between homologous chromosomes. Yeah it does. When the two homologous chromosomes pair up to form bivalents, crossing over occurs between them.
Where are yeast chromosomes located?
Baker's yeast or cerevisiae is an organism with 32 chromosomes that can perform asexual or sexual reproduction and exist as both a diploid and haploid cell.
Is homologous chromosomes only present in cells that undergo meiosis?
Usually they dont as homologous chromosomes form bivalents with other homologous chromosomes and crossing over occurs between the 2. But if a chiasmata does form between the t homologous chromosomes they can change information.
What are homologous choromosomes?
Homologous chromosomes are pairs of each other. They are chromosomes that are identical to each other except for a few variations. Everybody has one from their mom and dad. Everybody has 46 chromosomes, but in reality it is less confusing to say "we have 23 pairs of chromosomes."
A species has homologous chromosomes. what does this say about the species?
It has pairs of matching chromosomes (APEX)
What is the term used to refer to a cell that uses both sets of homologous chromosomes?
a diploid cell
Why is the 23rd pair of chromosomes not always homologous?
The 23rd pair of chromosomes are the sex chromosomes. In female humans, both sex chromosomes are homologous, and characterized as XX. In male humans, one sex chromosome is an X chromosome and the other is a much smaller, nonhomologous Y chromosome, and is characterized as XY.
Can you explain how homologous chromosomes are related and what role they play in genetic inheritance?
Homologous chromosomes are pairs of chromosomes that carry the same genes, one from each parent. They are related because they have similar genetic information. During sexual reproduction, homologous chromosomes exchange genetic material through a process called crossing over, which increases genetic diversity. Homologous chromosomes play a crucial role in genetic inheritance by ensuring that offspring receive a combination of genetic traits from both parents.
Similarities between Homologous chromosomes and sister chromatids?
Homologous chromosomes are two sister chomatids stuck together with cohesins forming a tetrad. They have the same genes but not necissarily the same alleles, so they could carry hair color, one with brown the other with blonde. So, homologous chromosomes share the same gene.
What are pairs of the same chromosomes called?
A pair of chromosomes is called a "chromosome pair."Generally, the two chromosomes in a pair are "homologous chromosomes."An individual form of a gene is called an "allele." (For example: if someone has genotype "Aa", they have two different alleles, "A" and "a")
