How do you tell the difference between a male and female Drosophila?

How do you tell the difference between a male and female Drosophila?

The key difference between male and female Drosophila melanogaster is that male organism has a short abdomen with fewer stripes while the female organism has a long abdomen with more stripes. The male and female Drosophila melanogaster are important organisms used in most genetic studies.

Is XXY male or female in Drosophila?

female
In Drosophila, XXY represents a female but in human it is an abnormal male. It shows that. Y-chromosome is essential for male sex in human. Y-chromosome is essential for female sex determination in Drosophila.

What is the sex ratio in Drosophila?

For a diploid drosophila that has XY, the ratio is 1:2 (1 X to 2 sets of autosomes, since it is diploid). Drosophilla sex chromosome ratio determines the factors it encodes which enhances the synthesis of sxl protein which in turn activates the female specific pathway.

Which is true of Drosophila sex determination?

Which of the following is true for Drosophila sex determination? Explanation: In Drosophila the sex is determined by the sex chromosome: set of autosome ratio. If X:A is 1 as in case of XX then it’s a female, ratio of 0.5 in case of XY gives a male. The presence or even absence of Y chromosome makes little difference.

What are the differences between male and female Drosophila Brainly?

The most simple characteristic to use to differentiate the two is to look at the genitalia of the flies. Males have dark, rounded genitalia at the tip of their abdomen, whereas females have light, pointed genitalia. Male Drosophila are generally smaller than their female counterparts, and have a darker abdomen.

Which of the following physical characteristics are useful for distinguishing male and female flies?

Look at how long the fly is. The female fruit fly is longer than a male of the same species. Their abdomens are longer, but not any other body part. This makes females appear a bit larger than their male counterparts. In other words, when comparing two flies, the smaller, shorter fly is male.

Why is XXY female in Drosophila?

Sex Determination in Drosophila The balance between female-determining factors encoded on the X chromosome and male-determining factors encoded on the autosomes determines which sex-specific pattern of transcription will be initiated. Thus, XX, XXY, and XXYY flies are females, while XY and XO flies are males.

Why is XXY female for flies?

Females have two X-chromosomes in all their somatic cells whereas males have one X and one Y chromosome. Individuals with a Y-chromosome will develop into a male, independent of the number of X-chromosomes. But the individual without the Y-chromosome will develop into a female.

What are sex linked traits in Drosophila?

X-Linked Traits Insects also follow an XY sex-determination pattern and like humans, Drosophila males have an XY chromosome pair and females are XX. Eye color in Drosophila was one of the first X-linked traits to be identified, and Thomas Hunt Morgan mapped this trait to the X chromosome in 1910.

How do you determine the sex of a human?

In humans, sex is determined by sex chromosomes (XX females, XY males). The X and Y chromosomes harbor dramatically different numbers and sets of genes (about 1,000 genes on the X and only a few dozen genes on the Y), yet they originated from ordinary autosomes during the early evolution of mammals (Figure 1).

What are the differences between male and female Drosophila Class 12?

Why are Drosophila used in genetic experiments?

There are many technical advantages of using Drosophila over vertebrate models; they are easy and inexpensive to culture in laboratory conditions, have a much shorter life cycle, they produce large numbers of externally laid embryos and they can be genetically modified in numerous ways.

What is the difference between a male and female housefly?

Adult: The house fly is 6 to 7 mm long, with the female usually larger than the male. The female can be distinguished from the male by the relatively wide space between the eyes (in males, the eyes almost touch). The head of the adult fly has reddish-eyes and sponging mouthparts.

Is XXY male in humans?

Usually, a female baby has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY). But in Klinefelter syndrome, a boy is born with an extra copy of the X chromosome (XXY). The X chromosome is not a “female” chromosome and is present in everyone. The presence of a Y chromosome denotes male sex.

What is sex inheritance discuss the phenomenon with respect of Drosophila?

The inheritance of characters linked to a particular sex is called sex-linked inheritance.It was first discovered by T.H. Morgan in Drosophila. Criss-cross inheritance is a type of sex-linked inheritance where a parent passes the traits to the grandchild of the same sex through offspring of the opposite sex.

How is sex determined and inherited?

The X and Y chromosomes, also known as the sex chromosomes, determine the biological sex of an individual: females inherit an X chromosome from the father for a XX genotype, while males inherit a Y chromosome from the father for a XY genotype (mothers only pass on X chromosomes).

What is the difference between Homogamety and heterogamety?

What is homogamety and heterogamety? Homogamety is the condition where an organism produces a single type of sex chromosme, whereas in heterogamety an individual producs two different types of sex chromosomes.

Why is Drosophila a model organism for human disease?

The striking observation that around 75% of the genes responsible for human diseases are evolutionarily conserved across animal species, including Drosophila, has meant that the study of this organism has facilitated the understanding of multiple aspects of an increasing number of human diseases.

Is Drosophila similar to humans?

Drosophila genome is 60% homologous to that of humans, less redundant, and about 75% of the genes responsible for human diseases have homologs in flies (Ugur et al., 2016).

What mutations affect sex determination in Drosophila?

Several Mutations Affect Drosophila Sex Determination •sex-lethal (Sxl)male (dead) male •transformer (tra)male male •transformer 2 (tra2)male male •doublesex (dsx)intersex intersex XX XY Sxl •Master regulatory protein that controls all aspects of sexual development •X:A ratio controls Sxl transcription

How do you make a Drosophila male or female?

PRODUCTION OF MALE OR FEMALE 1.DSXF represses the genes required for male development and activates female specific genes. Ultimately the XX Drosophila develops into a female. 2.DSXM inhibits female traits and promote male traits. Ultimately the XY Drosophila develops into a Male. 18. SEX DETERMINATION IN HUMAN Chromosomal Mechanism 19.

How are the sex-determining mechanisms different in mammals and insects?

The sex-determining mechanisms in mammals and in insects such as Drosophila are very different. In mammals, the Y chromosome plays a pivotal role in determining the male sex.

What is the role of deadpan in sex determination in Drosophila?

Younger-Shepherd S, Vaessin H, Bier E, Jan LY, Jan YN. deadpan, an essential pan-neural gene encoding an HLH protein, acts as a denominator in Drosophila sex determination. Cell. 1992;70:1–20. [ PubMed] [ Google Scholar]