Alleles A and a reside at a locus on the same chromosome as a locus with alleles B and b. Aa Bb is crossed with aa bb and the following progeny are produced: Aa Bb Aa bb 45 aa Bb 45 aa bb What conclusion can be drawn about the arrangement of the genes on the chromosome in the Aa Bb parent?
Q: The map of a chromosome interval in terms of map units is: A 10 20 From the cross Abc/aBC x abc/abc,…
A: Gene mapping is a process through which scientists can evaluate the presence and position of a gene…
Q: If 2 spot (S) is dominant to 4 spot (s), give the genotypes for the parents in the following…
A: Different versions of a gene are called alleles. Alleles are described as either dominant or…
Q: What is the probability of producing a child that will phenotypically resemble either one of the two…
A: A)
Q: The trihybrid AaBbCc is crossed to the triple recessive, aabbcc, and the following phenotypes are…
A: Here, The offspring are obtained as follows: abc = 64 ABC = 71 ABc = 3 abC = 2 aBc = 11 aBC = 18…
Q: On average, what proportion of the genome in the following pairs of humans would be exactly the same…
A: Meiosis is a cell division through which gametes are produced. One diploid eukaryotic cell divides…
Q: In Primula vulgaris (primrose), purple flowers are dominant to white flowers, and short plants are…
A: Primula vulgaris (primrose) have two types of Traits :- A ) Traits for flower color :- In this ,…
Q: In sweet peas, gene C or P alone produces white flowers, the purple colour being due to the presence…
A: Dominance is a physiological influence on the same gene locus by an allele over its partner allele.…
Q: On average, what proportion of the genome in the following pairs of humans would be exactly the same…
A: Chromosomes are carrier of deoxyribonucleic acid (DNA). DNA is the genetic material. Each cell has…
Q: A, B and C are three linked genes, A and B are separated by 40 cM and B and C are separated by 30…
A: Two linked genes have a certain “rate of concurrence” of recombination between them. This is known…
Q: 0. Alleles A and a reside at a locus on the same chromosome as a locus with alleles B and b. Aa Bb…
A: An allele is nothing, but a variant form of any gene. Some of the genes will have many different…
Q: Male cats are either black (B) or orange (O). Females are black, orange, or calico, which has…
A: Alleles the alternative forms of a gene that are located on the same locus of a homologous…
Q: A female with an aa bb cc dd genotype is crossed with a male with an Aa Bb Cc Dd genotype. What is…
A: To answer this question, convert the given tetrahybrid cross into 4 monohybrid crosses.
Q: In a breed of cattle, rough coat is dominant over smooth, and black coat is codominant to red. What…
A: Genes are the specific codes of these amino acids which produces a protein and alleles is the…
Q: The following two genotypes are crossed: Aa Bb Cc dd Ee × Aa bb Cc Dd Ee. What will the proportion…
A: Mendelian genetics is also known as classical genetics that involves the study of the inheritance…
Q: When one crosses two corn plants with green seedlings, the following progeny is obtained: 358 green…
A: Phenotypic ratio for the given numbers is, = 358/32, 87/32, 32/32 = 11.1, 2.7, 1 = 12 : 3 : 1…
Q: A squash comes in one of three shapes (long, oval, or round) and one of three colors (green, yellow,…
A: In the given question, we are given 3 different phenotype for shapes and 3 different phenotypes for…
Q: Let’s suppose gene A and gene B are closely linked to each other. An AaBb individual (with the…
A: Given, gene A and gene b are linked closely to each other. An individual with genotype AaBb is…
Q: A female animal with genotype A/a ⋅ B/b is crossed with a double-recessive male (a/a ⋅ b/b). Their…
A: The inheritance doesn’t always follow patterns explained by mendelian laws. It is important to…
Q: How many different types of gametes can be formed by individualsof the following genotypes? What are…
A: BASIC INFORMATION COMMON TERMS USED IN GENETICS HETEROZYGOUS - Every gene has two characters one…
Q: Two genes are located on the same chromosome and are known tobe 12 mu apart. An AABB individual was…
A: The two genes A and B are located 12 map units apart on the same chromosome. The AABB individual is…
Q: A number of all-white cats are crossed, and they produce the following types of progeny: 1216…
A: To find: To find the correct genotype of the black progeny from the given types of progeny
Q: In flies, long wings are a dominant trait, and short wings are a recessive trait. Medium wings are…
A: Homozygous individuals mean there is a pairing of the two same types of alleles and both of the…
Q: In corn, purple kernels (P) are dominant over yellow kernels (p) and starchy kernels (Su) are…
A: A chi-squared test, also written as χ2 test, is a statistical hypothesis test that is valid to…
Q: Polydactyly (having more than five digits) results from the presence of a dominant allele. A man has…
A: Polydactyly is the condition of having extra fingers and toes in humans. It is caused by…
Q: Alleles A and a are located on a pair of metacentric chromosomes. Alleles B and b are located on a…
A: Metacentric and acrocentric chromosome A chromosome is the hereditary material of a living organism.…
Q: Assume that two characters are controlled by genes we will generically label as A and B. In one…
A: Gene is defined as a segment or part of DNA that will occupy a particular place on a chromosome and…
Q: Thorn apples produce either purple (P) or white (p) flowers, and their fruits are either spiny (S)…
A: A gene is a unit of hereditary present in thousands on the strands of DNA(deoxyribonucleic acid).…
Q: in a cross AaBb X aabb, the following progeny were obtained: AaBb=50 aabb=46 Aabb=7 aaBb=6 What is…
A: Linkage is defined as occurrence of two or more than two genes on the same chromosomes. The genes…
Q: In rabbits, gray hair (G) is dominant to white hair (g), and black eyes (B) are dominant to red eyes…
A: The genotype is the genetic material passed down through generations, while the phenotype is an…
Q: In Drosophila, the genes for ebony body and sepia eyes are on the same chromosome. If s+se+e X…
A: Introduction: Generally the formula of possible genotypes is = 3n ( where n is the number of the…
Q: Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were…
A: Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were…
Q: The following testcross produces the progeny shown: Aa Bb × aa bb → 10 Aa Bb, 40 Aa bb, 40 aa Bb, 10…
A: Genetics is the branch of biology that deals with the study of genes, their variation, and heredity…
Q: Alleles A and a are located on a pair of metacentric chromosomes. Alleles B and b are located on a…
A: A gene is the basic unit of heredity. Each gene, in humans, is composed of two alleles. Alleles are…
Q: When two genes are located on the same chromosome,what is the physical basis for the production of…
A: Genetics is the branch of biology that deals with inheritance and variation. A gene is a section of…
Q: The A locus and the D locus are so tightly linked that norecombination is ever observed between…
A: Introduction Genes can be linked or autonomous. When they segregate during the time of formation,…
Q: Assume that A, B, C, D, E, F, and G are autosomal genes on different chromosomes. From the mating…
A: Here we will use the general multiplicity rule for finding the probability. According to the…
Q: A female with the genotype RRMM is crossed with a male with the genotype rrmm. Which of the…
A: Female genotype - RRMM Female gametes - RM Male genotype - rrmm Male gamete - rm Cross - RRMM x…
Q: The order of the genes on a plant chromosome is A, B, C, where A and B are located 10 cM apart and B…
A: Genes A and B are located 10 cM apart and B and C are located 3cM apart. Hence, S.C.O for A and B =…
Q: You are looking at a maternal effect gene that comes in 2 alleles, B (brown) is dominant and b…
A:
Q: An individual with genotype AaBbCcDdEe is crossed to an individual with genotype AABbccDdEE. What…
A:
Q: Alleles A and a are located on a pair of metacentric chromosomes. Alleles B and b are located on a…
A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…
Q: A diploid species with 44 chromosomes (i.e., 22 per set) is crossedto another diploid species with…
A: Genetics is the branch of biology that deals with the study of genome of an organism and its gene…
Q: In the snail Limnaea peregra, coiling of the shell is determined by the genes D for right-hand…
A: The gene for the right-hand coiled shell is dominant given by D. The gene for the left-hand coiled…
Q: In fruit flies, the phenotype for eye color is determined by a certain locus. E indicates the…
A: In the Drosophilidae family, Drosophila melanogaster is a fly species that are Diptera in the order.…
Q: Two parents have the following genotypes. FF and Ff. Which of the following genotypes is not…
A: Solution:- If the parents have the FF and Ff genotypes, The children get following genotypes, they…
Q: How can you use the product rule and sum rule to calculate the probability of a particular genotype…
A: In genetics the product rule can be defined as the probability of the independent events that is…
Q: An individual that is heterozygous for an inversion has the following chromosomes (∗ is the…
A: Introduction :- Crossing over is defined as the exchange of segments ( chromosomal segments)…
Q: A rabbit with black fur (B) is crossed with a rabbit with white fur (b). All of the offspring have…
A: LAW OF DOMINANCE It that when an organism is Heterozygous for a trait, only the dominant allele will…
Q: What would be the chromosome number of progeny resulting from the following crosses in wheat? What…
A: The complete chromosome sets present in the cells of an organism is referred to as ploidy. Humans…
Q: The following genotypes are crossed: AaBbccDdEE x AabbCcDDEe Given that genes A, B, C, D, and E are…
A: Introduction: The pentahybrid cross of AaBbCcDd can be easily calculated by assuming their…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 3 images
- A woman who sought genetic counseling is found to be heterozygousfor a chromosomal rearrangement between the second andthird chromosomes. Her chromosomes, compared to those in anormal karyotype, are diagrammed on the next page:(a) This woman is phenotypically normal. Does thissurprise you? Why or why not? Under what circumstancesmight you expect a phenotypic effect of such arearrangement?In the cross between a female AaBbccDdee and male AabbCcDdee, what proportion of the progeny are expected to be phenotypically identical to the female parent?Genes A, B, and C all assort independently. For the cross AaBbCc X AaBbcc, what fraction of the progeny would be expected to have the ABc phenotype?
- The following two genotypes are crossed: Aa Bb Cc Xr × Aa BB cc X+Y, where a, b, and c represent alleles of autosomal genes and X+ and Xr represent X-linked alleles in an organism with XX-XY sex determination. What is the probability of obtaining genotype aa Bb Cc X +X + in the progeny?A geneticist crosses two yellow mice with straight hair and obtains the following progeny: 12 yellow, straight 16 yellow, fuzzy 14 gray, straight 112 gray, fuzzya. Provide a genetic explanation for the results and assign genotypes to theparents and progeny of this cross.b. What additional crosses might be carried out to determine if yourexplanation is correct?. What is the probability of producing a child that willphenotypically resemble either one of the two parentsin the following four crosses? How many phenotypically different kinds of progeny could potentiallyresult from each of the four crosses?a. Aa Bb Cc Dd × aa bb cc ddb. aa bb cc dd × AA BB CC DDc. Aa Bb Cc Dd × Aa Bb Cc Ddd. aa bb cc dd × aa bb cc dd
- Duchenne muscular dystrophy is a recessive disorder caused by a rare,loss-of-function allele that is located on the X chromosome in humans. Anunaffected woman (i.e., without disease symptoms) who is heterozygousfor the X-linked allele causing Duchenne muscular dystrophy has childrenwith a man with a functional (non-disease-causing) allele. What is theprobability that this couple will have an unaffected son?Three autosomal genes are linked along the same chromosome.The distance between gene A and B is 7 mu, the distance betweenB and C is 11 mu, and the distance between A and C is 4 mu. Anindividual that is AA bb CC was crossed to an individual that is aaBB cc to produce heterozygous F1 offspring. The F1 offspring werethen crossed to homozygous aa bb cc individuals to produce F2offspring.If we assume that no double crossovers occur, what percentageof F2 offspring is likely to be homozygous for all three genes?How many different types of gametes can be formed by individualsof the following genotypes? What are they in each case?(a) AaBb, (b) AaBB, (c) AaBbCc, (d) AaBBcc, (e) AaBbcc, and(f) AaBbCcDdEe?
- On average, what proportion of the genome in the following pairs of humans would be exactly the same if no crossing over took place? (For the purposes of this question only, we will ignore the special case of the X and Y sex chromosomes and assume that all genes are located on nonsex chromosomes.)a. Father and childb. Mother and childc. Two full siblings (offspring that have the same two biological parents)d. Half siblings (offspring that have only one biological parent in common)In examining a large sample of yeast colonies on a petridish, a geneticist finds an abnormal-looking colonythat is very small. This small colony was crossed withwild type, and products of meiosis (ascospores) werespread on a plate to produce colonies. In total, therewere 188 wild-type (normal-size) colonies and 180small ones.a. What can be deduced from these results regardingthe inheritance of the small-colony phenotype? (Inventgenetic symbols.)b. What would an ascus from this cross look like?When Calvin Bridges observed a large number of offspring from a cross of white-eyed female Drosophila tored-eyed males, he found very rare white-eyed femalesand red-eyed males among the offspring. He was ableto show that these exceptions resulted from nondisjunction, such that the white-eyed females had received twoXs from the egg and a Y from the sperm, while thered-eyed males had received no sex chromosome fromthe egg and an X from the sperm. What progeny wouldhave arisen from these same kinds of nondisjunctionalevents if they had occurred in the male parent? Whatwould their eye colors have been?