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No, males of all species do not have Y chromosomes. Some species use other chromosomes for sex determination. Some birds and insects use a ZW chromosome system for sex determination, for example. There are also species whose sex is environmentally determined. For example, the sex of some reptiles is determined by the temperature at which their eggs are incubated.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoThe Y chromosome is one of the two sex chromosomes in humans (the other is the X chromosome). The sex chromosomes form one of the 23 pairs of human chromosomes in each cell. The Y chromosome spans about 58 million base pairs (the building blocks of DNA) and represents almost 2 percent of the total DNA in cells. Each person normally has one pair of sex chromosomes in each cell. The Y chromosome is present in males, who have one X and one Y chromosome, while females have two X chromosomes. Identifying genes on each chromosome is an active area of genetic research. Because researchers use different approaches to predict the number of genes on each chromosome, the estimated number of genes varies. The Y chromosome likely contains between 70 and 200 genes. Because only males have the Y chromosome, the genes on this chromosome tend to be involved in male sexual determination and development. Many genes are unique to the X or Y chromosome, but genes in an area known as the pseudoautosomal region are present on both chromosomes. As a result, men and women each have two functional copies of these genes. Many genes in the pseudoautosomal region are essential for normal development. Genes on the Y chromosome are among the estimated 20,000 to 25,000 total genes in the human genome. There are many genetic conditions related to genes on the Y chromosome. (taken from: http://ghr.nlm.nih.gov/chromosome=Y)
Wiki User
∙ 10y agoit is called that because it is a numerical letter answered by a 43 year old who is single and wanting to date someone who is in their 40's so give me a ring at 13524985762
Wiki User
∙ 6y agoMen have a y chromosome for their hair and other stuff.
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What sex chromosomes are found in males?
Males have both X & Y chromosomes
What is the 23rd pair of chromosomes that differ in males and females called?
The 22 pairs of chromosomes in human somatic cells that are same in males and females are called autosomes.
What X and Y chromosomes combine in making?
males
Is a female 2 X chromosomes?
Yes, and males have an X and a Y chromosome.
Which sexx chromosomes do males have?
Y chomozomes, I think. It says on Wikipedia.
What sex chromosomes are found in males?
Males have both X & Y chromosomes
The human X and Y Chromosomes are what?
The human X and Y chromosomes are:both present in every somatic cell of males and females.approximately equal in size.almost entirely homologous, despite their different names.called "sex chromosomes" because they determine an individual's sex.
Contrast the sex chromosomes found in human females and human males?
Human females have XX chromosomes while human males have XY chromosomes.
How many pairs of sex chromosomes do human have name them?
Humans have two sex chromosomes, the X and the Y. Human females have two X sex chromosomes and are said to be XX. Human males have one X and one Y chromosome and are said to be XY.
How many x and y genes a female human have?
Normal biological females have two x chromosomes and zero y chromosomes; while males have one of each
What are the two sex chromosome?
The two human sex chromosomes are called X and Y. Females carry two X chromosomes, and males carry one X and one Y.
How many chromosomes manual for your body?
Each human normally has 46 chromosomes separated into 23 pairs. In males, the 23rd "pair" is not really a pair since males have an X and a Y sex chromosome.
How many x chromosomes does males have?
1
How many human chromosomes are common to both males and females?
22 and 1/2 chromosomes are common to both males and female. The one that contains the X and Y chromosomes makes the difference. If you have X and Y chromosomes, you are male. If you have two X chromosomes, you are female. So both the male and female have got that one X chromosome in common.
Are x chromosomes all that females carry?
Yes. Females have 2 X chromosomes, while males have 1 X and 1 Y. in the human genome
What is the 23rd pair of chromosomes that differ in males and females called?
The 22 pairs of chromosomes in human somatic cells that are same in males and females are called autosomes.
What are the human sex chromosoes names?
In humans the sex chromosomes are either X or Y. Males have XY and females have XX.
