Chromosomes

Genes are stretches of DNA that contain code to make proteins. Chromosomes are made up of numerous Genes.

Sex chromosomes are called allosomes and in humans they are called the XY (male) or XX (female) pair.

Meiosis

Yes. That's true for any cell type

All of the information contained in the 23 pairs can't be contained in just 3 chromosomes. Most information would be left out, and then the organism would become a different animal or be seriously mutated, or not even be alive.

trisonomy

it compares by 50% or by half of chromosomes because there are 23 sex cells and 46 chromosomes

in the center. The next phase is anaphase

In the cytological terminology x and y chromosomes are identified as sex chromosomes. In human being these chromosomes are responsible for determination of sex in the offspring.

Sex cells have either one X or one Y chromosome. Male offspring have XY and female offspring have XX. In the case of two X's, one is inactivated. This a random act in the cells' early development.

It can be seen easily in cats as their coat color genes are found on the X chromosome. In female cats, one X may have the gene for black and the other may have the gene for red. When this is expressed, a mixture of red and black is seen. This color pattern is called a tortoiseshell. These cats are almost always female.

The male will be either black or red. The colors can also be dilute (blue and cream) with the same pattern. Males that have an extra X chromosome can show the same pattern as females.

dogs

specific genes

it is easier to cut and past photographs and compare :)

Not a problem from a reproductive standpoint or from a morphological standpoint but those with the XXX or with XXX mosaic syndrome who have intellectual developmental issues may beg to differ. Issues are not nearly as profound for XXX trisomy as for their XXY male counterparts. The effects of trisomy can vary considerably from person to person.

Each human egg actually contains 23 chromosomes, not 46. When a sperm fertilizes an egg, it brings another 23 chromosomes, resulting in the total of 46 chromosomes in a fertilized egg, which then develops into a human being.

Individual threads that form chromosomes are chromatin.

A surf perch typically has 24 chromosomes, which is common for most fish species. These chromosomes are found in the cells of the surf perch's body and contain the genetic material necessary for growth, development, and reproduction.

222

The monomers of nucleic acids are called nucleotides. Each nucleotide consists of three components: a sugar molecule (deoxyribose in DNA and ribose in RNA), a phosphate group, and a nitrogenous base (adenine, thymine, guanine, cytosine in DNA, and uracil replaces thymine in RNA).

X

Heredity

If all is normal, yes, it is true.

Women have two of them.
occurs in cells of female mammals
Women have two of them

ZZ

one allele