Which chromosome is found in Drosophila?

The Genome. THE basic karyotype of Drosophila melanogaster, which can be seen in mitotically active neuroblasts of the larval brain, is comprised by four chromosomes, the X and Y sex chromosomes, two larger autosomal elements, chromosomes 2 and 3, and the small dot fourth chromosome (Figure 1) (Metz 1914; Deng et al.

How many chromosomes pairs do Drosophila melanogaster species have?

four pairs
It has only four pairs of chromosomes – three autosomes, and one pair of sex chromosomes. Males do not show meiotic recombination, facilitating genetic studies.

What is the diploid chromosome number of a female Drosophila melanogaster?

eight
Drosophila has a diploid chromosome number of eight, or four pairs of homologous chromosomes numbered 1 – 4.

What is the number of chromosomes in a somatic cell of Drosophila?

eight chromosomes
These body (somatic) cells undergo mitosis. Fruit fly somatic cells have eight chromosomes.

How many chromosomes does a housefly have?

12
The diploid chromosome number for the house fly is 12.

What is strange about the chromosomes of Drosophila compared to most other eukaryotic chromosomes?

Drosophila telomeres use arrays of retrotransposons to maintain chromosome length, while nearly all other eukaryotes rely on telomerase-generated short repeats. Regardless of the DNA sequence, several end-binding proteins are evolutionarily conserved.

How many linkage groups do occur in female Drosophila?

four linkage groups
Fruit-fly Drosophila melanogaster has four linkage groups (4 pairs of chromosomes).

How many pairs of chromosomes are present in somatic cell of Drosophila Mcq?

Drosophila has four pairs of chromosomes.

How many chromosomes are there in meiocyte of housefly?

So, the correct answer is ’12’.

How many chromosomes does housefly have in somatic cell?

In housefly, the number of chromosomes in a somatic cell is 12. Therefore, meiocytes also possess 12 chromosomes.

What is the function of Rab9 in endosomes?

Rab9 functions in transport between late endosomes and the trans Golgi network Rab proteins represent a large family of ras-like GTPases that regulate distinct vesicular transport events at the level of membrane targeting and/or fusion.

Does Rab9 function in the transport of mannose 6-phosphate receptors?

These results strongly suggest that rab9 functions in the transport of mannose 6-phosphate receptors between late endosomes and the trans Golgi network. Moreover, our results confirm the observation that a given organelle may bear multiple rab proteins with different biological functions.

Is Rab9 a GTPase?

Rab proteins represent a large family of ras-like GTPases that regulate distinct vesicular transport events at the level of membrane targeting and/or fusion. We report here the primary sequence, subcellular localization and functional activity of a new member of the rab protein family, rab9.

Is Rab9 prenylated in vitro?

The majority of rab9 appears to be located on the surface of late endosomes. Rab9, purified from Escherichia coli strains expressing this protein, could be prenylated in vitro in the presence of cytosolic proteins and geranylgeranyl diphosphate.