What are the mutations in Drosophila?
They have a defect in their “curly gene,” which is on the second chromosome. Having curled wings is a dominant mutation, which means that only one copy of the gene has to be altered to produce the defect. In fact, if both copies are mutated, the flies do not survive.
What is the body colour of Drosophila?
In Drosophila (as well as in many other insects, (True 2003; Wittkopp and Beldade 2009; Zhan et al. 2010), body color results from a combination of dark black and brown melanins as well as light yellow-tan and colorless scelarotins (Wright 1987; True 2003; Wittkopp et al.
Is black body in Drosophila recessive?
A dominant gene B is responsible for the wild type body color of Drosophila, its recessive allele b produces black body color.
What causes white eye mutation in Drosophila?
White eye color is a mutant phenotype, caused by a mutation in a gene in the pigment pathway, discovered in 1910 by the father of modern genetics, Thomas Hunt Morgan (Green, 2010; Morgan, 1910).
How is the mutant allele for yellow body inherited?
How is the mutant allele for yellow body inherited? It is recessive. Which of the following statements regarding gene linkage is correct? The closer two genes are on a chromosome, the lower the probability that a crossover will occur between them.
What is the distance between genes y body colour and w eye colour of Drosophila?
Expert-verified answer The distance between genes that control eye color and body color in drosophila is 1.3 mu.
What is sepia eye mutation in Drosophila?
Sepia eye colour mutation decreases sexual activity of Drosophila melanogaster males, influences the preference ability of females and decreases the number of progeny from homogamic mating of the se x se type, as well as from heterogamic copulations in which sepia females take part.
What can chromatography tell us about Drosophila eye color?
CHROMATOGRAPHY OF DROSOPHILA EYE PIGMENTS This early genetic work demonstrated that a change in a gene (mutation) may affect the structure, function, or regulation of a protein, in this case, an enzyme. Eye color mutants have a defect in one or more enzymes required for the biochemical pathways of pigment synthesis.
What is the genotype of a yellow bodied red eyed female who is homozygous for eye color?
The female with red eyes and a yellow body must be homozygous recessive for the yellow body color allele. She is homozygous dominant for the eye color allele. Her genotype would be Xw+y Xw+y.
What is the distance between body Colour and why color Drosophila?
The distance between genes that control eye color and body color in drosophila is 1.3 mu. Explanation: The procedure of finding out the location of genes in a particular chromosome is known as genetic mapping. Through genetic mapping, the distance between two or more genes can be easily determined.
Is sepia eye color in Drosophila recessive?
Brown and sepia eyes are a result of a recessive gene and only occur when two sepia-eyed flies mate. White, vermillion and cinnabar-eyed fruit flies result from mutations and are far less common.
What is the wild type eye color in Drosophila?
The fruit fly Drosophila melanogaster possesses disproportionately large, often vividly colored eyes. These range in color from red to sepia to white and indicate a great deal about the fly’s genetic makeup. Some fruit flies bred in the wild have red eyes.
What is the body color of a homozygous recessive fly?
Since the female fly has a yellow body, and the tan body color is the dominant allele, she will be homozygous recessive for yellow body color. Therefore, the female fly will be homozygous for both traits.
What is the genotype of a red-eyed yellow bodied female fruit fly?
Since the female fly has a yellow body, and the tan body color is the dominant allele, she will be homozygous recessive for yellow body color. Therefore, the female fly will be homozygous for both traits. The genotype is Xw+y Xw+y.