Chromosomes

Two. one from each parent.

XX-girl XY-boy

Technically there will be no sister chromatids remaining at the beginning of telophase, as they will have been pulled apart during anaphase into two separate daughter chromosomes. From prophase to anaphase, however, the cell undergoing mitosis would have had 14 sister chromatids. After anaphase there would be a total of 28 daughter chromosomes in the cell, and they would be organized into two groups of 14 that corresponded to the 14 chromosomes the cell started with (barring any mistakes in the process).

50

metaphase

mutagenesis occurs

i dont think so

This is not very cool

A loss of a complete chromosome is called monosomy. This occurs when a cell only has one copy of a particular chromosome instead of the usual two copies.

In sexual reproduction, each parent contributes a sex cell with half as many chromosomes as the normal cells. The two sex cells combine and the zygote will have the proper total of chromosomes. In this way, the offspring inherit genetic information from both parents.

There are 46 chromosomes (condensed threads of genetic material formed from chromatin as a cell prepares to divide), and 23 pairs of chromosomes in the human body.

Basically its half the number of chromosomes the kangaroo has over all, which is 12. this is because half comes from the egg and the other half from the sperm. so the answer is 6.

When meiosis begins at Gap 1 phase (G1) the cell of a human has 46 chromosomes or 2n.

Yes, the y chromosome is critical for survival, for males at least. It contains the DNA (or genes) for the genetic make up of a male's body. No, I don't think so because Y chromosomes just dermine the sex. If it was critical to life then no girl would be alive because they don't have Y chromose.

Y chromosome truly determines sex. It contains SRY gene that produces TDF which makes sth to male. it not important for survival, just for prodactivity, since Y has came from X chromosome.

I think it's 74, but don't quote me on it because i'm not sure.

Inversion and duplication!

In a condition such as Trisomy 21 (predominant form of Down syndrome) embryo starts developing with three copies of chromosome 21 instead of two. It is due to the failure in the separation of two (2n) chromosome 21 in either egg or sperm cell prior to or during fertilization.

So precisely, the answer is, either one of sperm or egg gamete would have 24 chromosome (n) instead of 23

The number of genes varies. Most of any chromosome consists of non-coding DNA, which does not contain any genes.

Each chromosome has many chromatins. One gene consists of many chromatins. Therefore, one chromosome could have many genes.

In Human Beings two chromosomes normally determine a persons sex. If a person has two X chromosomes, (XX), that person will be a female. If a person has an X and a Y chromosome, that person will be a male. Most people get 23 chromosomes from their mother and 23 from their father. Thus, most people have 46 chromosomes. They get either an X or a Y chromosome from their father. Sometimes things get complicated. That is for another answer.

the chromosomes are replicated (copied) and are compacted into dense visible structures

1

I don’t know

because chromosome did not show any type of color it is colorless body

Cytoplasm

66

A metacentric chromosome is one with a centrally located centromere, resulting in two arms of equal length when the chromosome is divided. This gives the chromosome a characteristic V-shape or X-shape appearance when visualized under a microscope. Metacentric chromosomes are commonly found in many organisms, including humans.