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m.A given enzyme consists of two subunits (a dimer), which are specified by a s
A given enzyme consists of two subunits (a dimer), which are specified by a single gene locus.
i.If a = normal subunit and a’ = mutated subunit, what subunit combinations might be found in a heterozygote, assuming random association between these subunits?
ii.If the mutation resulted in a net change in the charge of the molecule, how many bands would be detecta
Crossing lines with the same recessive phenotype What do you get from the result
Gene Interactions You study color variants of Arabidopsis hypotheticus, a plant with red flowers. You have obtained three pure-breeding mutant lines, all named for their place of origin. Two lines have white flowers (Aberdeen White and Victoria White), and one has yellow flowers (Kansas Yellow). You begin your analysis by crossing each line with wild-type plants and selfin
In Nicotiana, two inbred strains produce long (PL) and short (PS) corollas. These lines are crossed to produce F1, and the F1 are crossed to produce F2 plants in which corolla length and variance are measured. The table summarizes mean and variance of corolla length in each generation.
I am in serious need of correction or confirmation please! I am going to throw out some random facts and please let me know if I am accurate or not. Thanks for helping!
F1 hybrid can only be created by using two separate parents from inbred lines or P1. F1 are uniform, showing a new phenotype without variation. Not even once in a while will you see a second phenotype show
Thank you for reading. So I have a basic understanding of Mendel's works, but I am trying to figure genetics out better. Please if you could help, because I can't find the data anywhere on the internet on these questions.
If you take an F1 hybrid and cross it to a p1 (seperate from the hybrid's two different parent types) would you get a new F1 hybrid, or F
The table shown lists the approximate new mutation rates for three autosomal dom
The table shown lists the approximate new mutation rates for three autosomal dominant human diseases. Trait Mutations per 106 gametes Retinoblastoma (tumor of the retina) 20 Achondroplasia (statural dwarfism) 80 Neurofibromatosis (tumor of nervous tissue) 220
In a series of 50000 consecutive live births recorded in a
You decide to cross the reciprocal translocation strain to a pure (black, sepia)
You decide to cross the reciprocal translocation strain to a pure (black, sepia) line to generate female F1 flies that are both translocation heterozygotes and BbSs dihybrids.
You then backcross these F1 females to males from the pure (black, sepia) line. This diagram shows synapsis in the F1 females. (In the diagram, NII = normal chromosome II; TII = translocated chromos
Hi I'm currently taking genetics at my school and the section on haploid genetics (i.e. Neurospora) has me dazed. Can anyone explain clearly how tetrad analyis works, what PD,NPD,T all represent and how they all come together in the so-called Perkin's formula? (the derivation) Thanks!
Two theoretical genetic strains of a virus (a − b − c − and a + b + c +) were used to simultaneously infect a culture of host bacteria. Of 10,000 plaques scored, the following genotypes were observed. Determine the genetic map of these three genes on the viral chromosome. Decide whether interference was positive or negative. a+b+c- 41000
In a transformation experiment, donor DNA was obtained from a prototroph bacterial strain (a + b + c +), and the recipient was a triple auxotroph (a − b − c −). What general conclusions can you draw about the linkage relationships among the three genes from the following transformant classes that were recovered? a+ b- c- 180 a- b
One result of X-linkage is a crisscross pattern of inheritance in which
One result of X-linkage is a crisscross pattern of inheritance in which sons express recessive genes of their fathers and daughters express recessive genes of their mothers.
a. True b. False
False, One result of X-linkage is a crisscross pattern of inheritance in which sons express recessi
The binding of cAMP to the CAP protein involves numerous electrostatic interacti
The binding of cAMP to the CAP protein involves numerous electrostatic interactions. Most of the interactions are hydrogen bonds between cAMP atoms and the side chains of various amino acids in the CAP protein. Which of the following is a salt bridge rather than a hydrogen bond?
What happens if region 1-100 is removed from the Gal4p sequence?
Can someone verify the validity of my statements? (This topic is extremely confusing to me)
A) What happens if region 1-100 is removed from the Gal4p sequence? Gal4p is a protein encoded by the GAL4 gene and the entire protein consists of a total of 881 amino acids. Section 1-98 of the entire Gal4 protein is called the “DNA binding domain.” In order for transc
A scientist wanted to compare the evolution of the families Balaenopteridae (the rorqual baleen whales) and Delphinidae (the dolphins). Balenopteridae consist of about 11 species while Delphidae consist of about 41 species. The scientist proposes the hypothesis that evolution has occurred more rapidly in Delphinidae due to their active, predatory lifestyle, while the baleen whales,
Could someone please help me identify or look up or direct me towards finding the targets of this microRNA and its implications in breast cancer? hsa-miR-99 (human mature form)
An experiment was done to determine the linkage relationship of three genes (a,
An experiment was done to determine the linkage relationship of three genes (a, b, and c) in Drosophila melanogaster. Homozygous females phenotypically a, c were crossed with homozygous males phenotypically b. The F1 females were all wild-type in appearance and the F1 males were all a, c. The F1 females and males were crossed to give the following F2 phenotypes and numbers (SEE atta
Identify the phenotypes and genotypes of all the people shown in this pedigree.
Complete Practice Problem 20 on page 615 in the textbook. Identify the phenotypes and genotypes of all the people shown in this pedigree. Rolling the tongue (R) is dominant over inability to roll the tongue as it remains flat (r).
Hint: What kind of inheritance is this? How do you assign symbols? See (sr) Pedigree Analysis. Did you assign all non-shaded individuals
What is the map distance to 4 significant figures between the A and B loci?
"These are the results of a three point test cross in Drosophila for the three loci ABC: aCB = 1444, ACb = 245, AcB = 1222, ACB = 2212, aCb = 1333, acB = 299, Acb = 1499, acb = 2333. What is the map distance to 4 significant figures between the A and B loci? Hint: Establish gene order first."
Frequency of gametes and phenotypes from genetic map
Consider the genetic map below of loci a-g, where the distance between loci are indicated in map units. a-5-b-20-c-10-d-2-e-25-f-1-g a) Calculate the frequency of ac gametes from an Ac/aC genotype. b) BcE from bce/BCE c) bFG from bfg/BFG d) the frequency of BCD/Bcd from bCd/BcD x BCd/BcD e) the frequency of aBcDeFg/aBcDeFg progeny from a mating of
Linked genes are 50 M.U.'s apart. You will not recover >50% recombinants. Why?
Here is the question:
If two genes are linked on a chromosome and over 50 map units apart, in theory you will not recover more than 50% recombinants, which is the same as independent assortment (genes on two different chromosomes). Using diagrams, show why this is so.
Theodore was a highly inbred handsome rat with a very long tail (30 cm), while his equally inbred yet striking mate, Spacey, had a petite tail (6 cm). When Theodor and Spacey had their first litter, all had 18-cm tails. When the babies grew up and interbred, they produced 256 F2’s with tails ranging in size from 6 cm to 30 cm in the following intervals: 6, 10, 14, 18,
EMERGENCY: Need help with UMUC Lab # 5 Genetic Inheritance
Lab # 5 Genetic Inheritance
Section A: Patterns of Inheritance
Background Information In the 19th century, a monk named Gregor Mendel conducted a series of experiments to determine how ‘traits’ or features of pea plants were passed on from generation to generation. He carefully studied seven traits of successive generations of pea plants to disc
I am having trouble with this quantification method. I am a CS major working in a developmental biology lab so I do apologize before hand if this question is dumb.
The MAK2 model for qPCR is: "Dn = (Dn-1) + (k)ln(1+((Dn-1)/k))", "Dn" is the value at cycle "n". "D0" and "k" are the only two adjustable parameters that deter
Fruit Fly genetics: WILD MALE x BROWN EYE DUMPY WING female
Question pertains to Pearson biologylabsonline homework. Assignment is to cross a wild male X brown eye, dumpy wing female. The F1 results were as follows: 100% wild F1 phenotype, autosomal results.
Backcrossed a F1 male to a P1 female. F2 Results were: 1:1 ratio of wild phenotypes to brown eye, dumpy wing. There were no flys showing wild eyes, du
A few doubts regarding Heart (Atrial) Embryology...
HI GUYS
1. What is the developmental significance of both the Atrial appendages, i.e. what is the reason for their presence? What I mean is, is it just to increase its volume as man has more oxygen and nutritional requirements all of a sudden in the developmental tree or what?
2. Why does septum spurium develop at all? It anyways is incorporat
Assume that during meiosis I, none of the C chromosomes disjoin at metaphase, bu
Assume that during meiosis I, none of the C chromosomes disjoin at metaphase, but they separate into dyads (instead of monads) during meiosis II. Each resultant gamete participated in fertilization with a normal haploid gamete. What combinations will result?
Check all that apply. A) two copies of chromosome A, two copies of chromosome B, four copies of chromos
Calculate the number of mismatches that could occur in one human cell during one
Calculate the number of mismatches that could occur in one human cell during one round of replication. Assume the size of the human genome is 3.2 billion base pairs. Assume the error rate is 1 mismatch per 10^10 bp. Express your answer using two significant figures.
Two different genes control the expression of coat colour in an organism.
3. Two different genes control the expression of coat colour in an organism. The allele B produces a black coat colour and the allele G produces a gray-striped coat. The gene B influences the expression of gene G. The gray-stripped coat pattern appears only when gene B is homozygous recessive. An albino (coat colour lacking) occurs when both genes are homozygous. A pure-breedin
What is the map distance to 4 significant figures between A and B loci?
"These are the results of a three point test cross in Drosophila for the three loci ABC: aCB = 354, ACb = 28, AcB = 261, ACB = 666, aCb = 256, acB = 35, Acb = 309, acb = 578. What is the map distance to 4 significant figures between the A and B loci? Hint: Establish gene order first."
