A Drosophila embryo dies during early embryogenesis due to arecessive maternal effect allele called bicoid−. The wild-type alleleis designated bicoid+. What are the genotypes and phenotypes ofthe embryo’s mother and maternal grandparents?

A Drosophila embryo dies during early embryogenesis due to arecessive maternal effect allele called bicoid−. The wild-type alleleis designated bicoid+. What are the genotypes and phenotypes ofthe embryo’s mother and maternal grandparents?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter6: Cytogenetics: Karyotypes And Chromosome Aberrations

Section: Chapter Questions

Problem 26QP: Fragile-X syndrome causes the most common form of inherited intellectual disability. What is the...

See similar textbooks

Related questions

Q: One of the X chromosomes in a particular Drosophila female had a normal order of genes but carried…

A: Crossing over: It occurs during prophase I and involves the exchange of genetic material between…

Q: What is the type of inheritance? What is known of the genotype of the male in the above cross? What…

A: Introduction Genetics is frequently used to refer to heredity, which is the passing on of genetic…

Q: Prader-Willi syndrome and Angelman syndrome

A: Genetic disorders: The inherited medical condition or disorder caused by a DNA abnormality is known…

Q: When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation…

A: The result observed by Thomas Hunt Morgan, where all the white-eyed flies in the F2 generation were…

Q: What are the expected phenotypic ratios in the F, generation? If one of the F, males is mated to an…

A: The cross is between red bar-eyed female and purple normal eyed male. The genotype of the female is…

Q: One of the X chromosomes in a particular Drosophila female had a normal order of genes but carried…

A: Inversion usually occurs in the prophase 1 in which two break can occur in the area and can thus…

Q: A XY individuals transcribe the Sxl gene early but not late. B XX individuals carry the Sxl gene, XY…

A: Sex lethal genes Sxl is a gene that is involved in the exression of the X:A signal . It is a…

Q: A gene involved with body colour in this species of fruit fly is located on the non-homologous…

A: The Gene for Eye Color in Drosophila: Red vs. BrownIntroductionThis species of fruit fly possesses a…

Q: Bow-legs is hypothesized to be X-linked recessive trait in Drosophila melanogaster. The P1 virgin…

A: Introduction :- When the test statistic is chi-squared distributed under the null hypothesis, a…

Q: THEME 3: In Drosophila recessive mutants called a, b, c, and d all have the same phenotype; namely,…

A: Wild type individuals result when the Plus sign is indicated and this Plus sign occurs when the two…

Q: A blue eyed agouti hair male mouse is mated to a brown eyed yellow haired female mouse, and a test…

A: Given: A blue eyed agouti hair male mouse is mated to a brown eyed yellow haired female mouse, and…

Q: Drosophila females of wild-type appearance but heterozygous for three autosomal genes are mated with…

A: Let us represent the alleles responsible for wildtype eyes, wildtype bodies, and wildtype thoraxes…

Q: The orange coat color allele in cats is located on the X chromosome and is one of two genes…

A: The two variants of coat color found in cats are orange and black. The alleles responsible for these…

Q: the white-eyed w+ gene from one end of the X chromosome locus (w) moves the to a location nearer to…

A: This is an example of epigenetic modification. It alters the gene expression pattern.

Q: Members of a family are affected by a Oco-dominance hereditary inflammatory and Odominant negative…

A: Autoinflammation is a disease caused by mutations in the PLCG2 gene. People with such conditions…

Q: #2 New Problem for 3 sex-linked genes. Triply heterozygous females were mated to triply mutant males…

A: The cross that is given in the table is involved 3 genes. If 3 genes are not linked then they will…

Q: DRAW IT Suppose, as in the questionat the bottom of Figure 15.9, the parental(P generation) flies…

A: Consider the following V= Normal wing v= Vestigial wing G= Gray body-color g= Black body-color Then,…

Q: what is the approximate map distance between the two genes?

A: Linkage is a phenomenon which determines how genes are placed in close proximity to each other. It…

Q: You are given a Drosophila female that looks wild-type but is heterozygous for mutations in tan body…

A: Three-point cross: In genetics, the three-point cross is used to determine the distance between two…

Q: In Drosophila, three autosomal genes have the following map:20 m.u. 10 m.u.a b ca. Provide the data,…

A: Gene mapping is the way in which a genetic map is designed that will use recombination frequency…

Q: A male Drosophila from a wild-type stock is discovered to haveonly seven chromosomes, whereas…

A: In male drosophila, one member of chromosome IV has translocated to the distal end of Chromosome II.…

Q: Duchenne muscular dystrophy is a recessive disorder caused by a rare,loss-of-function allele that is…

A: Duchenne muscular dystrophy (DMD) is a quickly progressive type of muscular dystrophy that happens…

Q: a. In Drosophila, crosses between F1 heterozygotes ofthe form A b / a B always yield the same ratio…

A: Since you have posted a question with multiple sub-parts, we are answering only first one for you.…

Question

A Drosophila embryo dies during early embryogenesis due to a
recessive maternal effect allele called bicoid−. The wild-type allele
is designated bicoid+. What are the genotypes and phenotypes of
the embryo’s mother and maternal grandparents?

Definition Definition Observable physical traits or characteristics of an organism, which are determined by its genetic makeup (genotype) as well as environmental factors. These traits can include anything from eye color or height to behavior or disease susceptibility. Understanding an organism's phenotype is important in fields such as genetics, medicine, and ecology.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.

Similar questions

In Drosophila, a heterozygous female for the X-linkedrecessive traits a, b, and c was crossed to a male that phenotypically expressed a, b, and c. The offspring occurred inthe following phenotypic ratios.+ b c 460a + + 450a b c 32+ + + 38a + c 11+ b + 9 No other phenotypes were observed.(a) What is the genotypic arrangement of the alleles ofthese genes on the X chromosome of the female?
A Drosophila male is heterozygous for a reciprocaltranslocation between an autosome and the Y chromosome. The part of the autosome now present onthe Y chromosome contains the dominant mutationLyra (shortened wings); the other (normal) copyof the same autosome is Lyra+. This male is nowmated with a true-breeding, wild-type female. Whatkinds of progeny would be obtained, and in whatproportions?
The following list of four Drosophila mutations indicates the symbol for the mutation, the name of thegene, and the mutant phenotype:Allele symbol Gene name Mutant phenotypedwp dwarp small body, warped wingsrmp rumpled deranged bristlespld pallid pale wingsrv raven dark eyes and bodiesYou perform the following crosses with the indicatedresults:Cross #1: dwarp, rumpled females × pallid, raven males→ dwarp, rumpled males and wild-type femalesCross #2: pallid, raven females × dwarp, rumpled males→ pallid, raven males and wild-type femalesF1 females from cross #1 were crossed to males froma true-breeding dwarp rumpled pallid raven stock.The 1000 progeny obtained were as follows:pallid 3pallid, raven 428pallid, raven, rumpled 48pallid, rumpled 23dwarp, raven 22dwarp, raven, rumpled 2dwarp, rumpled 427dwarp 47Indicate the best map for these four genes, includingall relevant data. Calculate interference values whereappropriate.
In Drosophila, a cross (cross 1) was made between twomutant flies, one homozygous for the recessive mutationbent wing (b) and the other homozygous for the recessivemutation eyeless (e). The mutations e and b are alleles oftwo different genes that are known to be very closelylinked on the tiny autosomal chromosome 4. All the progeny had a wild-type phenotype. One of the female progeny was crossed with a male of genotype b e/b e ; we willcall this cross 2. Most of the progeny of cross 2 were of theexpected types, but there was also one rare female ofwild-type phenotype.a. Explain what the common progeny are expected tobe from cross 2.b. Could the rare wild-type female have arisen by (1)crossing over or (2) nondisjunction? Explain.
A maternal effect gene in Drosophila, called torso, occurs as a functionalallele (torso+) and a nonfunctional, recessive allele (torso−)that prevents the correct development of anterior- and posterior-moststructures. A wild-type male (torso+torso+) is crossed to a female ofunknown genotype. This cross produces offspring (larva) that are allmissing their anterior- and posterior-most structures and therefore die during early development. What are the genotype and the phenotypeof the female fly in this cross? What are the genotypes andphenotypes of the female fly’s parents?
In Drosophila, gray body color is dominant over ebony body color,while long wings are dominant over vestigial wings. Work thefollowing crosses through the F2 generation, and determine thegenotypic and phenotypic ratios for each generation. Assumethat the P1 individuals are homozygous: (a) gray, long * ebony,vestigial, and (b) gray, vestigial * ebony, long, and (c) gray,long * gray, vestigial.
It is assumed that in Drosophila the following genotypes produce phenotypes. َA- B- = Red color A- bb = Plum color aa B- = Magenta color aa bb = White color The third latent genotype, cc, kills homozygous Plums, but has no effect on other genotypes. Also, genotype C- does not produce a large phenotype. If first-generation Drosophilas are heterozygous for all of these genes and interbreed, what phenotypic ratios are expected in society?
In Drosophila, a cross was made between females expressing thethree X-linked recessive traits, scute bristles (sc), sable body (s),and vermilion eyes (v), and wild-type males. All females were wildtype in the F1, while all males expressed all three mutant traits.The cross was carried to the F2 generation and 1000 offspringwere counted, with the results shown in the following table. Nodetermination of sex was made in the F2 data. Question:Calculate the coefficient of coincidence; does this represent positive or negative interference? Phenotype Offspringsc s v 314+ + + 280+ s v 150sc + + 156sc + v 46+ s + 30sc s + 10+ + v 14
Drosophila females heterozygous for each of three recessive autosomal mutations with independent phenotypic effects [thread antennae (th), hairy body (h), andscarlet eyes (st)] were testcrossed to males showingall three mutant phenotypes. The 1000 progeny of thistestcross werethread, hairy, scarlet 432wild type 429thread, hairy 37thread, scarlet 35hairy 34scarlet 33a. Show the arrangement of alleles on the relevantchromosomes in the triply heterozygous females.b. Draw the best genetic map that explains these data.c. Calculate any relevant interference values
Three recessive mutations in that affect eye colour, wing shape and body colourarew, m and b. The following numbers were obtained for testcross progeny in Drosophila. Number Phenotype + m + w + b + + b w m + m b 218 236 168 178 95 101 w + + + 3 w mb 1 (i) Determine the chromosomal composition of the heterozygous female parent. Construct a genetic map of the linkage group(s) these genes occupy. Show the order and give the map distances between the genes. (ii)
In a cross in Drosophila involving the X-linked recessive eye mutationwhite and the autosomally linked recessive eye mutation sepia(resulting in a dark eye), predict the F1 and F2 results of crossingtrue-breeding parents of the following phenotypes:(a) white females * sepia males(b) sepia females * white malesNote that white is epistatic to the expression of sepia
Female fruit flies homozygous for the X-linked white-eye alleleare crossed to males with red eyes. On very rare occasions, an offspringof such a cross is a male with red eyes. Assuming these rareoffspring are not due to a new mutation in one of the mother’s Xchromosomes that converted the white-eye allele into a red-eyeallele, explain how a red-eyed male arises.