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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.
What else can I help you with?
Does a W chromosome look like a W?
No, a W chromosome in bird species represents one of the sex chromosomes, which determines the female sex. It does not physically resemble the letter "W." The W chromosome carries genes that are essential for female development and reproduction.
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 is a male genotype in the zw chromosome system?
In the ZW sex-determination system, which is found in some birds, reptiles, and insects, males have a homozygous genotype consisting of two Z chromosomes, denoted as ZZ. In contrast, females have a ZW genotype, where one chromosome is Z and the other is W. This system contrasts with the XY sex-determination system found in mammals, where males have an XY genotype.
What is the designation for the short arm of a chromosome?
Chromosome # + pso the short arm of Chromosome 11 is referred to as 11p
Is the smallest gene cell chromosome?
Chromosome 21 is the smallest human chromosome. Inside of the chromosome, there are 48 billion nucleotides, the building blocks of DNA.
What has the author Z V Bolkhovskikh written?
Z V. Bolkhovskikh has written: 'Khromosomnye chisla tsvetkovykh rastenii = chromosome numbers of flowering plants'
In what chromosome is the ear lobe trait located?
The ear lobe trait is not located on a specific chromosome, as it is a common genetic trait that is not influenced by a single gene or located on a specific chromosome. The presence or absence of ear lobes is determined by multiple genetic factors.
Does a W chromosome look like a W?
No, a W chromosome in bird species represents one of the sex chromosomes, which determines the female sex. It does not physically resemble the letter "W." The W chromosome carries genes that are essential for female development and reproduction.
What is the role of chicken sex chromosomes in determining the gender of chickens?
The role of chicken sex chromosomes in determining the gender of chickens is similar to that in humans. Female chickens have two Z chromosomes (ZW) and male chickens have one Z and one W chromosome. The presence of the W chromosome determines the chicken's gender as female, while its absence results in a male chicken.
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 is a male genotype in the zw chromosome system?
In the ZW sex-determination system, which is found in some birds, reptiles, and insects, males have a homozygous genotype consisting of two Z chromosomes, denoted as ZZ. In contrast, females have a ZW genotype, where one chromosome is Z and the other is W. This system contrasts with the XY sex-determination system found in mammals, where males have an XY genotype.
Do chromosomes determine the sex of a penguin?
Yes, as in all birds, the penguin's sex is determined by it's chromosomes. But interestingly the bird system is different from the one in mammals (including humans). Humans are female when they have two X chromosomes (and male if they have both X and Y), whereas two Z chromosomes make a bird a male (and females have both a Z and W chromosome).
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 are the name of 23 chromosomes in human body?
No, there are 46 chromosomes in one cell. A gamete, or sex cell, has 23 chromosomes because during fertilization, the female and male gametes (egg and sperm, respectively) come together to form a new cell with 46 chromosomes
What is the designation for the short arm of a chromosome?
Chromosome # + pso the short arm of Chromosome 11 is referred to as 11p
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.
