chromosomes were first discovered in a monkey.
Two (2). Before DNA replication, each chromosome is composed of a single chromatid. After replication, but before separation of the chromatids during anaphase, this is true.
The X chromosome is one of the two sex-determiningchromosomes in many animal species, including mammals (the other is the Y chromosome). It is a part of the XY sex-determination system and X0 sex-determination system. The X chromosome was named for its unique properties by early researchers, and this resulted in its counterpart being named the Y chromosome for the next letter in the alphabet when it was discovered later.
Genes and chromosome numbers vary from animal to animal
no
Every mammal (of any species, including human) have two sex chromosomes, which are either "X" or "Y". (These designations come from a vague approximation of the shape of the chromosome.) These exist in EVERY CELL in the animal. If the animal has two "X" chromosomes, the animal is female; if the animal has one "X" and one "Y" chromosome, the animal is male. In every species, the female only contributes an "X" chromosome to the offspring. It is the male contribution which might be either "X" or "Y", which will determine the gender of the child.
Two (2). Before DNA replication, each chromosome is composed of a single chromatid. After replication, but before separation of the chromatids during anaphase, this is true.
well! Due to evolution..this type of giant chromosome came into picture...due to environmental changes and to adapt itself better with enviroment ..such change has been occured..such as high secreation in case of drosophila melanogaster...
Hermann Henking
A chromosome contains genetic material in both plant and animal cells.
The X chromosome is one of the two sex-determiningchromosomes in many animal species, including mammals (the other is the Y chromosome). It is a part of the XY sex-determination system and X0 sex-determination system. The X chromosome was named for its unique properties by early researchers, and this resulted in its counterpart being named the Y chromosome for the next letter in the alphabet when it was discovered later.
Gregor Mendel
When DNA replication takes place without subsequent cell division, polytene chromosomes may result. These are giant chromosomes comprised of multiple chromatids (identical chromosome copies) arranged together like strands of a large cable. They are commonly found in the salivary glands of the fruit fly (Drosophila melanogaster) and are regions of active transcription.
Genes and chromosome numbers vary from animal to animal
I think it's Theador Schwann ..Not sure .....
Animal and plant cells.
Both
no