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A Z chromosome is a sex chromosome in a species in which the female is heterogametic (i.e. has different sex chromosomes). The counterpart is the W chromosome.
In an XY system (e.g. humans), the male is heterogametic, XY, and the female is homogametic, XX.
In a ZW system, the male is homogametic, ZZ, and the female is heterogametic, ZW.
Examples of species with ZW systems include all birds, many reptiles, fishes and some insects.
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Does a W chromosome look like a W?
No, W and Z were just chosen as the names to distinguish them from X and Y.
Which pair of chromosomes produces a male off-springs?
It depends which species you are. There is the XY system (which mammals use) where it is the presence of the Y chromosome that induces male development. The Y chromosome contains genes like Sry that initiate the male developmental program. Male mammals have an X and a Y chromosome, female mammals have two X chromosomes. However, for other species, like birds, use the so-called ZW sex chromosome system where it is actually the absence of the W chromosome that permits male development - male birds have two Z chromosomes and female birds have a W and a Z chromosome. And then there's the X0 system, which many insects use, where two copies of an X chromosome results in a female but a single copy of an X chromosome results in a male.
What does deletion chromosome consists of?
There is no 'deletion chromosome'. You mean chromosome deletion, and it is a phenomenon where a chromosome disappears from cell's genetic layout.
What chromosome does tay-sachs disease affect?
chromosome 17 The correct answer is chromosome 15
What is an antonym for chromosome?
Chromosome does not have an antonym.
In what chromosome is the ear lobe trait located?
The gene for free ears is located on chromosome 22. If the ears are attached, this is due to gene "Z".
What has the author Z V Bolkhovskikh written?
Z V. Bolkhovskikh has written: 'Khromosomnye chisla tsvetkovykh rastenii = chromosome numbers of flowering plants'
Does a W chromosome look like a W?
No, W and Z were just chosen as the names to distinguish them from X and Y.
Which pair of chromosomes produces a male off-springs?
It depends which species you are. There is the XY system (which mammals use) where it is the presence of the Y chromosome that induces male development. The Y chromosome contains genes like Sry that initiate the male developmental program. Male mammals have an X and a Y chromosome, female mammals have two X chromosomes. However, for other species, like birds, use the so-called ZW sex chromosome system where it is actually the absence of the W chromosome that permits male development - male birds have two Z chromosomes and female birds have a W and a Z chromosome. And then there's the X0 system, which many insects use, where two copies of an X chromosome results in a female but a single copy of an X chromosome results in a male.
Is an x chromosome and chromosome the same thing?
An x chromosome is specifically a feminine chromosome. With a x and y chromosome its male, with a x and x, it is a female.
Which chromosome contains the sex gene?
chromosome 1 chromosome 1
What does deletion chromosome consists of?
There is no 'deletion chromosome'. You mean chromosome deletion, and it is a phenomenon where a chromosome disappears from cell's genetic layout.
What chromosome does tay-sachs disease affect?
chromosome 17 The correct answer is chromosome 15
What is an antonym for chromosome?
Chromosome does not have an antonym.
Does an x chromosome looks the same as a y chromosome?
No. An 'X' chromosome looks like an 'X'. The 'Y' chromosome looks like a deformed 'X'. It is noticeably different to an 'X' chromosome. Also, the 'Y' chromosome is only a third of the size of an 'X' chromosome - an 'X' chromosome is 155 million base pares, while the 'Y' chromosome is only 58 million base pairs.
At the beginning of cell division DNA and the proteins associated with the DNA coil into a structure called an?
chromosome.
Illustration of metacentric chromosome?
A metacentric chromosome is one in which the centromere is located in the center of the chromosome.
