What term is defined as one of more versions of a gene that results in a slightly different trait? (Ex. the different versions that control if a pea plant is tall or short) phenotype chromosome homozygous O allele
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A: Given: The trait is autosomal dominant. Father doesn't have the trait (xx) Mother have the trait…
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A: Genetics is a branch of biology that deals with the study of genes, genetic variation and heredity…
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A: Inheritance is defined as the process in which hereditary characters are passed from the parents to…
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A: Deletion is a type of Chromosomal aberration in which there is loss of segment of a chromosome.In…
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A: Homologous chromosomes are the two DNA pieces which carries same genes and one is obtained from the…
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A: Mendel's law of independent assortment states that the alleles of two (or more) different genes get…
Q: What describes a situation in which an allele's expression depends on the parent from which it was…
A: A gene is present in different forms that are expressed in a phenotype; allele is a one of the…
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A: Pedigree is a tree like representation that indicates family members and their respective…
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A: A dihybrid cross is a cross that involves two traits. If the corn plants are heterozygous for both…
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A: This is the chart showing genotype as well as phenotype of the parent fruit flies. Q1. Now with…
Q: What are alleles? A) alternative forms of a genes for a single trait, such as blue eyes or brown…
A: The study of genetic variations, heredity, and genes is called genetics. The genetic or hereditary…
Q: A phenotype trait that is depending on several genes is said to be:
A: A phenotype describes the observable features of an organism. This defines the overall look and…
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A: Gamete are the haploid reproductive structure which on fusion results into zygote. The individual…
Q: Brown eyes are dominant over blue eyes. This is NOTA sex-linked trait. Cross a brown-eyed colorblind…
A: Dihybrid cross takes into account two genes.
Q: Write down symbols for the alleles. (These may be given in theproblem.) When represented by single…
A: Genotype is the genetic makeup of an organism. Phenotype is the observable characteristics that…
Q: Which of the following defines a genotype? The particular set of alleles that is carried in an…
A: answer- Genotype is a particular set of alleles that is carried in an individual’s chromosomes.
Q: Non-Mendelian Genetics Patterns of inheritance in which traits are not passed from -The two alleles…
A: Introduction: Non Mendelian genetics- This is a form of genetics in which the traits are not…
Q: Match the following words with their definitions. + Chromosomes + Recessive trait Linked genes +…
A: Each definition of the words with explanation is discussed in step 2.
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A: Given that: Dimples are dominant over no dimples. Let us assume that D codes for dimples and d codes…
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Q: If a gene shows classic dominance (one allele is dominant, one is allele is recessive), what is the…
A: Dominant trait in genetics is the one that has the capability of masking the effect of the recessive…
Q: In pea plants the allele for round seeds (R) is dominant to the allele for oval seeds (r). In a…
A: Inheritance refers to the transmission of genetic trait from the parent to the offspring. A Punnett…
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A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…
Q: A testcross is used to determine which of the following? The phenotype of an individual with a…
A: The test cross is another basic tool designed by Gregor Mendel. In its simplest form, the test cross…
Q: Consider two genes. The first one is autosomal with dominant allele A and recessive allele a in the…
A: Given, there are two genes. 1. Autosomal with allele A being dominant and a being recessive. 2. X…
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A: Genotype is defined as the genetic constituent of an organism. where is the phenotype is defined as…
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A: Incomplete dominance is when a dominant allele, or form of a gene, does not completely mask the…
Q: In the following pedigree of an autosomal recessive trait, which individuals in generation III…
A: Autosomal recessive traits: The traits present on chromosomes other than sex chromosomes, the…
Q: Give an EXAMPLE of each genetic term to tell the difference of th terminologies. a. Gene and allele…
A: Genetics is a field of biology that studies genes, genetic diversity, and inheritance in living…
Q: A heterozygous individual has_____ for a trait being studied. a. the same allele on both homologous…
A: There is a process of codominance in the heterozygotes when the two alleles are expressed in any…
Q: Which of the following statements describes the multifactorial inheritance in genetics? O Phenotype…
A:
Q: A pedigree chart is a useful tool in understanding how genetic disorders may be passed through a…
A: Introduction - A pedigree chart is a graphic that depicts the prevalence and appearance of…
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A: Mendel performed a series of experiments to study the transmission of traits from parents to their…
Q: A researcher crosses mice with brown eyes and long tails, and the F1 progeny were recovered in the…
A: Null hypothesis - The two traits given follow Mendelian pattern of inheritance.
Q: In pea plants, tall (T) is dominant to short (t). If an offspring pea plant is "tt", what are its…
A: The Correct answers for the question are: Tt X tt Tt X Tt
Q: In this pedigree, which parents-child pair allows you to reject the hypothesis of X- linked dominant…
A: In females, or for certain cancers, X-linked dominant conditions only affect females are seen more…
Q: Is the inheritance pattern indicated by the shaded symbols in this pedigree consistent with the…
A: By the pedigree analysis we can determine the mode of inheritance pattern of a genetically inherited…
Q: Two linked genes, (A) and (B), are seperated by 15 cM. A man with the genotype AB/ab has children…
A: The linked genes are situated at a distance of 15 cM (centimorgan) from each other on the same…
Q: Gregor Mendel is generally recognized as the father of genetics because he discovered the principles…
A: Gregor Mendel was an Austrian biologist whose work on heredity became the modern theory of genetics.…
Q: Which of the following is the correct pairing of phenotype and genotype of Individual 5 in the…
A: ANSWER;- A)Dwarf, Homozygous dominant Explain;- A cross between two homozygous assortments generally…
Q: The A and B alleles are codominant, and the O allele is recessive. An AB blood type mother has…
A: Codominance means neither allele can mask the expression of another allele. Example of codominance…
Q: In the third generation, no one is affected, therefore no one carries the disease allele. O The…
A: Pedigree analysis is a technique for determining how genes are passed down across generations in…
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- The Drosophila chromosome 4 is extremely small;virtually no recombination occurs between genes onthis chromosome. You have available three differentlymarked chromosome 4s: one has a recessive allele ofthe gene eyeless (ey), causing very small eyes; one hasa recessive allele of the cubitus interruptus (ci) gene,which causes disruptions in the veins on the wings;and the third carries recessive alleles of both genes.Drosophila adults can survive with two or three, butnot with one or four, copies of chromosome 4.a. How could you use these three chromosomes tofind Drosophila mutants with defective meiosescausing an elevated rate of nondisjunction?b. Would your technique allow you to discriminatenondisjunction occurring during the first meioticdivision from nondisjunction occurring during thesecond meiotic division?The Drosophila chromosome 4 is extremely small;virtually no recombination occurs between genes onthis chromosome. You have available three differentlymarked chromosome 4s: one has a recessive allele ofthe gene eyeless (ey), causing very small eyes; one hasa recessive allele of the cubitus interruptus (ci) gene,which causes disruptions in the veins on the wings;and the third carries recessive alleles of both genes.Drosophila adults can survive with two or three, butnot with one or four, copies of chromosome 4.a. How could you use these three chromosomes tofind Drosophila mutants with defective meiosescausing an elevated rate of nondisjunction?b. Would your technique allow you to discriminatenondisjunction occurring during the first meioticdivision from nondisjunction occurring during thesecond meiotic division?c. What progeny types would you expect if a flyrecognizably formed from a gamete produced bynondisjunction were testcrossed to a fly homozygous for a chromosome 4 carrying both ey…The maternal-effect mutation bicoid (bcd) is recessive. Inthe absence of the bicoid protein product, embryogenesis isnot completed. Consider a cross between a female heterozygousfor the bicoid mutation (bcd+/ bcd-) and a homozygousmale(bcd-/ bcd-). Predict the outcome (normal vs. failed embryogenesis) inthe F1 and F2 generations of the cross described.
- On rare occasions, an organism may have three copies of achromosome and therefore has three copies of the genes on thatchromosome (instead of the usual number of two copies). Forsuch a rare organism, the alleles for each gene usually segregateso that a gamete will contain one or two copies of the gene. Let’ssuppose that a rare pea plant has three copies of the chromosomethat carries the height gene. Its genotype is TTt. The plant is alsoheterozygous for the seed color gene, Yy, which is found on adifferent chromosome. With regard to both genes, how manytypes of gametes can this plant make, and in what proportions?(Assume that it is equally likely that a gamete will contain oneor two copies of the height gene.). The production of pigment in the outer layer of seedsof corn requires each of the three independently assorting genes A, C, and R to be represented by at leastone dominant allele, as specified in Problem 64. Thedominant allele Pr of a fourth independently assortinggene is required to convert the biochemical precursorinto a purple pigment, and its recessive allele pr makesthe pigment red. Plants that do not produce pigmenthave yellow seeds. Consider a cross of a strain of genotype A/A ; C/C ; R/R ; pr/pr with a strain of genotypea/a ; c/c ; r/r ; Pr/Pr.a. What are the phenotypes of the parents?b. What will be the phenotype of the F1?c. What phenotypes, and in what proportions, willappear in the progeny of a selfed F1?d. What progeny proportions do you predict from thetestcross of an F1?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?
- Genetics 181 Rule of Incomplete Dominance When two different pure-breeding strains are crossed, and their offspring show a blending of phenotypes, then neither allele is dominant. This is easily recognized when the phenotype is somewhere between two extremes. Counting the parents, there are three phenotypes (black, white, grey) being expressed in these flowers instead of only two, and that third phenotype is intermediate between the other two. This heterozygous condition is called incomplete dominance. 1. On the chart you did earlier, which of the three hair types (wavy, curly, or straight) represents incomplete dominance-the blended heterozygous condition? 2. You cross a herd of red cattle with white cattle and all of the calves appear to be roan (reddish white). Is this an example of incomplete dominance? How do you know? 3. You cross a blue flowering pea plant with a white flowering pea plant and all of the offspring are blue flowered. Is this an example of incomplete dominance? How…In individuals affected by cystic fibrosis, salt crystals may appear afterperspiration dries up. In addition, the disease causes respiratory disorderswhich can be both debilitating and lethal. It occurs in individuals homozygousfor the recessive gene. Two normal parents had a daughter with thesymptoms of this disease, and a normal son who marries a normal womanwith an afflicted A test (salt concentration in perspiration of heterozygotes ishigher than normal) disclosed that both are indeed carriers of the gene. If thefirst child born to the mating in (b) was defective, what is the probability thatthe 2nd child would also be defective?Express answer in fraction formDATA | The following pedigree illustrates the inheritance of ringed hair, a condition in which 28. ANALYSIS each hair is differentiated into light and dark zones. What mode or modes of inheritance are possible for the ringed-hair trait in this family? 2 II 2 II 3 4 5 IV I P 2 Pierce, Genetics: A Conceptual Approach, 7e © 2020 W. H. Freeman and Company 2.
- . The human IGF2 gene is autosomal and maternallyimprinted. Copies of the gene received from themother are not expressed, but copies received fromthe father are expressed. You have found two allelesof this gene that encode two different forms of theIGF2 protein distinguishable by gel electrophoresis.One allele encodes a 60K (Kilodalton) blood protein;the other allele encodes a 50K blood protein. In ananalysis of blood proteins from a couple named Billand Joan, you find only the 60K protein in Joan’sblood and only the 50K protein in Bill’s blood. Youthen look at their children: Jill is producing only the50K protein, while Bill Jr. is producing only the 60Kprotein.a. With these data alone, what can you say about theIGF2 genotype of Bill Sr. and Joan?b. Bill Jr. and a woman named Sara have two children, Pat and Tim. Pat produces only the 60K protein and Tim produces only the 50K protein. Withthe accumulated data, what can you now say aboutthe genotypes of Joan and Bill Sr.?As a Drosophila research geneticist, you keep stocksof flies of specific genotypes. You have a fly that hasnormal wings (dominant phenotype). Flies with shortwings are homozygous for a recessive allele of thewing-length gene. You need to know if this fly withnormal wings is pure-breeding or heterozygous forthe wing-length trait. What cross would you do todetermine the genotype, and what results would youexpect for each possible genotype?A maternal effect gene in Drosophila, called torso, is found as afunctional allele (torso+) and a nonfunctional, recessive allele(torso−) that prevents the correct development of anterior- andposterior-most structures. A wild-type male (torso+ torso+) is crossedto a female of unknown genotype. This mating produces 100% larvathat are missing their anterior- and posterior-most structures andtherefore die during early development. What is the genotype andphenotype of the female fly in this cross? What are the genotypesand phenotypes of the female fly’s parents?