Perform two consecutive crosses similar to those of Mendel for the following individual plants. Plants with round seeds (RR) are crossing with plants with wrinkled seeds (rr). After the first cross, cross the offspring together to generate F2 offspring. What are the genotypic and phenotypic ration of F2?
Q: Using Mendelian symbols, our cross is PpYyRr × Ppyyrr. What fraction of offspring from this cross…
A: Dominant will always mask the recessive genes and it will appear either in homozygous or…
Q: Mendel crossed peas having round seeds and yellow cotyledons (seed leaves) with peas having wrinkled…
A: Mendel experimented with the inheritance of traits in pea plants, by controlling pollination he was…
Q: Using the concepts of non-mendelian genetics, what the phenotypic ratio of the offspring if two…
A: Option b is correct - 3 pea plant with purple flower : 1 pea plant with light violet flower. BB or…
Q: In dogs, wire-haired (H) is dominant to smooth-haired (h). In a cross of a homozygous wire-haired…
A: Gregor Johann Mendel was the first person who discovered the basic principles of heredity during the…
Q: Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of…
A: Introduction In this question we have to write the distribution of phenotypic features in F1…
Q: In pea plants, seed shape and seed color are controlled by genes located on different chromosomes.…
A: Sol: Given Alleles for the seed shapes of pea plant are R- round shape or dominant and r-…
Q: In a species of bird, feather colour is determined by a single, non-autosomal gene that shows…
A: Given Feather colour is non autosomal means it is sex based charecter. Parent phenotype Female -…
Q: In the pearl-millet plant, color is determined by three alleles at a single locus: Rp1 (red), Rp2…
A: Zygosity can be either heterozygous or homozygous. Heterozygous has one recessive allele and one…
Q: In tomatoes, dwarf (d) is recessive to tall (D), and opaque (light-green) leaves (op) are recessive…
A: The parents given are, D opd Op×D opd op The distance distance between the genes is given as 7 m.u.…
Q: Among dogs, short hair is dominant to long hair and dark coat color is dominant to white (albino)…
A: The Chi-square test is a statistical test and is commonly used to find if there is a significant…
Q: Pea Plants In pea plants, a round-seed shape (R) is dominant over a wrinkled-seed shape (r). A…
A: In this question, we are given two phenotypes for seed-shape which are round seed-shape and wrinkled…
Q: Use a branch diagram to determine all the phenotypes and corresponding ratios that are expected to…
A: Branch diagram is a method for analysing recombination of different traits. The branch diagram…
Q: The petal color of a species of flowers is inherited along Mendelian ratios. A cross of two plants…
A: Introduction Mendelian Ratios Are Proportions Of Distinct Genotypes In The Offspring Of Parents With…
Q: What is a reciprocal cross? Suppose that a gene is found as a wildtype (functional) allele and a…
A: The genetic cross is the cross between two parents performed purposefully that produces offspring…
Q: xamine the pedigree. If individual I-1 is a carrier for the Robertsonian translocation leading to…
A: Down syndrome is characterised by a combination of phenotypic features that include mental…
Q: Referring to the pattern of inheritance of comb type and feathering in chicken, consider the cross…
A: The pattern of inheritance of comb type and feathering in chicken. First we will acknowledge that…
Q: In the results that Mendel obtained, the violet colored flower was dominant to the white flower…
A: According to Mendel, various hereditary traits are controlled by factors and there is a pair of…
Q: In pea plants, seed shape and seed color are controlled by genes located on different chromosomes.…
A: As it is given in the question, the gene located on the different chromosome controls the seed…
Q: In pea plants, the "L" allele, which indicates smooth seeds, is dominant over the "l" allele, which…
A: Independent assortment is random distribution of alleles to the gametes that occurs when genes are…
Q: In shorthorn cattle, coat color may be red, white, or roan. Roan is an intermediate phenotype…
A: Gregor Mendel gave three principles of inheritance. The dominance is a concept where one allele of…
Q: Rabbits with the genotype CC are black, heterozygous rabbits C°C" appear brown, and rabbits that are…
A: A phenotype is a set of qualities that may be observed in a person, such as height, eye colour, and…
Q: In guinea pigs, the black coat (B) is dominant over the white coat (b), and straight hair (H) is…
A: The term heterozygous is associated with a condition in which different kinds of alleles associated…
Q: Radishes may be round, oval and lomg. Aside from this, they may be red, purple or white in color.…
A: Genetic inheritance is a mechanism by which characters or traits from one generation are passed to…
Q: A TT (tall) plant is crossed with a tt (short plant). Create the cross and answer the following…
A: The branch of biology that deals with the study of genes, heredity and genetic variations are termed…
Q: In the pearl-millet plant, color is determined by three alleles at a single locus: Rp1 (red), Rp2…
A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…
Q: A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What are the…
A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…
Q: When Mendel crossed yellow-seeded and green-seeded pea plants, all the offspring were yellow-seeded.…
A: Given: Mendel crossed yellow-seeded and green-seeded pea plants, all the offspring were…
Q: You are given a plant with green leaves and are asked to determine its genotype. What type of…
A: A genotype is organism`s set of heritable set of genes that can be passed down from parents to…
Q: In one study, Gregor Mendel crossed yellow-seeded, tall garden pea with a green-seeded, short garden…
A: The Mendelian inheritance is a biological inheritance and is in accordance with the principles…
Q: Mendel describes subjecting each of the 34 varieties of peas he obtained to a two-year trial. During…
A: According to rule only one question to be answered .kindly repost another questions. Mendel's laws…
Q: In Drosophila, gray body color is dominant to ebony body color, while long wings are dominant to…
A: Genotype is defined as the complete set of genes present in the individual and the information of…
Q: Mendel crossed true-breeding plants with wrinkled and green peas to true breeding plants with round…
A: The true-breeding plants are homozygous at all the gene loci. This means that it carries the same…
Q: in guinea pigs, rough coats (with lots of swirly cowlicks) are dominant over smooth coats. If an RR…
A: From the monohybrid cross, Mendel’s law of segregation was given. According to this law, when two…
Q: Seed color is controlled by 3 independently assorting bi-allelic genes (P, Q, R), such that…
A: The correct answer to this question: option d. 4:1
Q: Cross a heterozygous dominant purple flowered plant to a recessive white flowered plant. What is…
A: Mendelian genetics discusses the principles of inheritance of a trait. Mendel proposed three basic…
Q: In a mendelian monohbrid cross which generation is always completely heterozygous?
A: In Mendelian monohybrid cross, only one character or trait is considered for the study purpose. The…
Q: Suppose a student performs a three-point test cross with mice involving mouse genes T, V and D. If…
A: Three point test cross:- it is usually used to study the sequence and position three genes present…
Q: In rabbits, the coat color black dominant (B) over brown (b). Short hair is dominant (S) over long…
A:
Q: Considering pea plants like the ones Mendel studied, you will be crossing plants based on two…
A: Seed pod color: Yellow seed pods - YY Green seed pods - yy Seed shape: Round seeds - RR Wrinkled…
Q: How much genotypic variation do you find in the randomly picked parents of your crosses?
A: Question - How much genotypic variation do you find in the randomly picked parents of your crosses?
Q: In Drosophila, gray body color is dominant to ebony body color, while long wings are dominant to…
A: Genotype is defined as the complete set of genes present in the individual and the information of…
Q: In dogs, dark coat color is dominant over albino, andshort hair is dominant over long hair. Assume…
A: Hereditary qualities is the study of genes and heredity of how certain characteristics or attributes…
Q: In wolves, black eyes (B) are dominant to brown eyes (b) and short fur (S) is dominant to long fur…
A: The different forms of gene that specify a single character are referred to as alleles. The dominant…
Q: Which of the following statements is true about the molecular basis of Mendel's second law? The…
A: Mendel on working on the pea plants proposed 3 mendelian laws, the traits or genes which inherit by…
Q: Mendel crossed homozygous plants with green seeds with homozygous plants with yellow seeds and found…
A: Genes are the functional units of heredity. It carries information that is transferred from one…
Q: Mendel crossed Parental true-breeding (homozygous) Purple flowered peas with true-breeding…
A: As purple colour (P) is dominant to white colour (p).So, PP = Homozygous dominant, purple colour…
Q: You carry out a trihybrid cross (a cross in which the parental plants differ for three characters)…
A: Trihybrid cross is that in which three contrasting pairs of characters are studied. We are given…
Q: Genes A, B, and C all assort independently. For the cross AaBbCc X AaBbcc, what fraction of the…
A: Explanation given in below step
Q: Mendel performs a cross using a true-breeding pea plant with round, yellow seeds and a true-breeding…
A: A gene has two or more alleles.
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…
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images
- Mendelian ratios are modified in crosses involving autotetraploids.Assume that one plant expresses the dominant trait greenseeds and is homozygous (WWWW). This plant is crossed to onewith white seeds that is also homozygous (wwww). If only onedominant allele is sufficient to produce green seeds, predict theF1 and F2 results of such a cross. Assume that synapsis betweenchromosome pairs is random during meiosis.Gregor Mendel examined the inheritance of two traits in pea plants: seed coat texture and colour. Seed coat texture can be represented as S-smooth and s-wrinkled, and seed coat colour can be represented as Y-yellow and y-green. SSYY plants were crossed with ssyy plants to yield F1 pea seeds that were all smooth and all yellow. By crossing plants grown from these F1 seeds, Mendel obtained four different phenotypes of F2 seeds: • smooth and green seeds wrinkled and green seeds smooth and yellow seeds wrinkled and yellow seeds ● Use the following information to answer the next question. ● The F2 phenotypic ratio that Mendel obtained upon crossing two heterozygous smooth and yellow F1 individuals would have been: smooth and green wrinkled and green : smooth and yellow: wrinkled and yellow Record only the numeric values associated with the phenotypes. (Do not include the colons, spaces, commas, etc.)Assume that smooth seed coats are dominant over rough seed coat. If two pea plants that are both Heterozygous for seed coats are crossed, what do you expect in the offspring (the f1 generation)? Specifically, what genotypes, what phenotypes, and in what ratios? (Use S for the smooth seed coat and s for the rough seed coat.) (Again, it is helpful to write out all the possible genotypes and give the phenotype for each genotype before answering the specific question.) Be careful in writing capital S and lower case.
- In Drosophila, gray body color is dominant to ebony body color, while long wings are dominant to vestigial wings. Assuming that the F1 individuals are homozygous, work the following crosses through the F2 generation, and determine the genotypic and phenotypic ratios for each F1 and F2 generation.Assume that the trihybrid cross AABBrr x aabbRR is made in a plant species. Assume that A and B are dominant alleles, but there is no dominance effect of alleles at the R locus. a) How many different gametes are possible in the F1generation? What are the genotypes of these gametes? b) What is the probability of the parental aabbRR genotype in the F2 progeny? c) What proportion of the F2 progeny would be expected to be homozygous for all three genes?The allele G for yellow stigma is completely dominant to green (g). Supposing two strains of autotetraploid plants are available and their genotypes are as follows: GGgg – in this plant the gene is close to the centromere Gggg – in this plant the gene is far from the centromere If these two plants are crossed: a) provide the gametes that can be obtained from the two plants; b) provide the genotypic and phenotypic ratios of the offspring.
- Two true breeding pea plants-one with yellow round seeds (YYRR) and the other with green wrinkled seeds (yyrr)-were crossed. The F1 plants will be dihybrid heterozygous for both the characters (yyRr). The plants were self-pollinated. Will the Y and R alleles always stay together, generation after generation? Or are seed color and seed shape inherited independently of each other? Show how you come to a conclusion.In guinea pigs, rough coat (R) is dominant to smooth coat (r). If a homozygous rough-coated animal is crossed with a smooth-coated one: What will be the phenotype(s) of the F1 generation? What will be the phenotype(s) of the F2 generation? What will be the phenotype(s) of the offspring resulting from a cross of an F1 individual back to its rough parent? What will be the phenotype(s) of the offspring of a cross of an F1 individual back to its smooth parent?Mendel crossed peas having round seeds and yellow cotyledons with peas having wrinkled seeds and green cotyledons. All the F1 plants had round seeds with yellow cotyledons. Diagram this cross through the F2 generation, using both the Punnett square and forked-line methods.
- Pea PlantsIn pea plants, a round-seed shape (R) is dominant over a wrinkled-seed shape (r). A round-seeded pea plant was crossed with another round-seeded pea plant. What are the genotype(s) and phenotype(s) ratios of the F1 generation? Show all possibilities using Punnett squares. State the F1 generation genotypes and phenotypes.Seed color is controlled by 3 independently assorting bi-allelic genes (P, Q, R), such that homozygote pp exhibits recessive epistasis over the seed color pathway, converting a white pigment into yellow, which then becomes orange in the presence of a Q allele, or red in the presence of R. Individuals with both Q and R alleles show pink seeds. In a cross of PpQqRr individuals with ppqqrr individuals, what is the ratio of white-seeds to red seeds? а. 1:4 b. 2:3 с. 1:1 d. 4:1 e. 1:5type P = n! (p)* (q)"* х! (n - х)! Practice Problem: You cross a true-breeding pea plant with red flowers to a true-breeding pea plant with white flowers. All of your offspring have red flowers. Which gene is dominant? Why? What is the genotype of your offspring? You then cross the offspring to each other. What ratio do you expect? Why? You count 1000 plants and look at their flowers. Your results are as follows: 740 red 260 white Does this follow a simple Mendelian inheritance pattern? Why or why not? DADT 2 MEA SUDI ND D LUT IONS