A 3-inch plant was crossed with a 15-inch plant, and all F1 plants were 9 inches. The F2 plants exhibited a “normal distribution,” with heights of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15 inches. (a) What ratio will constitute the “normal distribution” in the F2? (b) What will be the outcome if the F1 plants are testcrossed with plants that are homozygous for all nonadditive alleles?

Q: Consider a cross between a true breeding purple flowered pea plant (genotype PP) and a true breeding…

A: Phenotype is the external appearance of an organism.

Q: A tall, purple flower plant with genotype Tt Pp is crossed with a tall, white flower plant of…

A: Introduction Probability is a parameter that can be used to estimate the likelihood of a specific…

Q: A series of three-point testcrosses is made to determine the genetic map order of seven linked…

A: An allele is a genetic variant, which is expressed as A (capitalized) when the trait is dominant and…

Q: A female of genotype a b c + + + produces 100 meiotic tetrads. Of these, 68 show no crossover…

A: A four-part structure that forms during the prophase of meiosis and consists of two homologous…

Q: When a white guinea pig is crossed to a yellow guinea pig, all the progeny are cream colored. From a…

A: In genetics, any gene has two alleles pairs viz. Dominant or Recessive. The allele which gets…

Q: autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is very…

A: Polyploidy is a condition in which there would be the presence of more than two sets of chromosomes…

Q: What would be the size and genotype of the F1 from a  cross between a true-breeding 11 cm plant and…

A: Mendel’s Law of dominance: Out of a pair of contrasting characters present together, only one is…

Q: In a cross between a 29cm plant and a 20cm plant what would be the genotypes giving the smallest…

A: heights in plants is a polygenic trait that is controlled by multiple genes that might be linked…

Q: nd seed (R) is dominant to wrinkled seed (r) and yellow seed (Y) is dominant to green (y), how many…

A: F1 generation:   Y Y y Yy Yy y Yy Yy The outcome is Yy green-yellow. where yellow seed (Y)…

Q: Consider these two crosses and assume that independent segregation is exhibited by all gene pairs:…

A:

Q: In barley, a self-fertilizing species that can be cross-fertilized, two true-breeding strains with…

A: Cytoplasmic inheritance:Inheritance of genes those present in the organelles of the cytoplasm to the…

Q: autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is very…

A: Autotetraploid is a genetic condition that is characterized by the presence of four times the…

Q: You have a pure breeding plant with red flowers, yellow seeds and red-veined leaves. You cross this…

A: The involvement of three genes makes this a trihybrid cross instance. Three genes in the parental…

Q: Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the…

A: Matings within pure-breeding (or true-breeding) lines produce offspring carrying specific parental…

Q: Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the…

A: True breed plants are defined as having identical alleles, which constitute their genotype and give…

Q: E. W. Lindstrom crossed two corn plants with green seedlings and obtained the following progeny:…

A: Two corn plants with green seedlings were crossed and the offspring obtained are green seedling is…

Q: Nicotiana glutinosa (2 n = 24) and N. tabacum (2 n = 48) are two closely related plants that can be…

A: Nicotiana is a herbaceous plant belong to the family of Solanaceae. Nicotiana sp is commonly called…

Q: In a three-point testcross such as this one, why aren’t the F1 and the tester considered to be…

A: The three-point test cross is used to determine the three genes in loci of a genome organism. The…

Q: In the F2 generation of this cross, 224/300 embryos develop into wild-type flies, while 76/300 of…

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the…

A: Genes are the units of heredity that carry coded genetic information in the form of nucleotide…

Q: Tired of watering her garden, your instructor is attempting to grow desert plants. One such plant is…

A: According to Simple Mendelian inheritance , there are two alleles for a gene that determine a…

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: How many different kind of gametes could each of the parents produced?

A: Mendel did many of cross-breeding experiments. His key finding was that there were 3 times as many…

Q: In an autotetraploid Chinese primrose (Primula sinensis), the gene controlling stigma color is very…

A: Polyploidy is a condition in which there would be the presence of more than two sets of chromosomes…

Q: In an autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is…

A: Polyploidy is a condition where there would be the presence of more than two sets of chromosomes in…

Q: In guinea pigs, rough coat (R) is dominant over smooth (r), and black coat (B) is dominant over…

A: Breeding is a process of sexual reproduction that generates offsprings in plants or animals.…

Q: When true-breeding mice with brown fur and short tails (BBtt)were crossed to true-breeding mice with…

A: Genes are the units of heredity that are transmitted through generations. Genes contain the genetic…

Q: What would be the size and genotype of the F1 from a  cross between a true-breeding 11 cm plant and…

A: Mendel's Law of dominance states that out of a pair of contrasting characters present together, only…

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: Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the…

A: Quantitative genetics or polygenic inheritance was first studied by J Kolreuter (1760) in case of…

Q: .Round and blue-colored berries are dominant to wrinkled and purple ones. What is the expected…

A: Given  Round allele (R) is dominant over wrinkle allele (r).  Blue colour (B) is dominant over pink…

Q: A plant with the genotype AAbb was crossed with one with the genotype aaBB. The F1 plants were…

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: Strain A Strain B BB bb A a Virescent Virescent F1 NOT FOR A Virescent

A: The female strain of barley with genotype BB is virescent While the strain B male with genotype Bb…

Q: A three-point testcross is carried out between three linked genes. The resulting nonrecombinant…

A: Three-point cross is the cross that is used in genetics for the determination of the loci of three…

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: . A corn geneticist has three pure lines of genotypes a/a ; B/B ; C/C, A/A ; b/b ; C/C, and A/A ;…

A: Genetics is a part of science that deals with the investigation of genes, genetic variation, and…

Q: In a particular organism, the A locus and the D locus are so tightly linked that no crossing over is…

A: Answer: CROSSING OVER = It is the process of recombination between two strands of DNA , when their…

Q: In dogs, dark coat color phenotype (D) is dominant over albino (a) and short hair (S) is dominant…

A: Given  D is dominant over a  D gives dark coat colour and a gives albino colour.    S is dominant…

Q: What would the punnett square look like for the question below? If an F1 eggplant in figure 5.2 is…

A: Given: Purple fruit - Dominant - PP Violet fruit - Heterozygous - Pp White fruit - recessive - pp…

Q: You have a pure breeding plant with red flowers, yellow seeds and red-veined leaves. You cross this…

A: As only white flowers is asked in the question and all 3 genes are independently assorting so we can…

Q: You perform a cross between two true-breeding strains of zucchini, One has green fruit and the other…

A:

Q: barley, a self-fertilizing species that can be cross-fertilized, two true-breeding strains with…

A: Reciprocal cross is done where different parental types are used both as a maternal form and as a…

Q: A pure strain of Mendel’s peas, dominant for all seven of his independently assorting genes, was…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: The following results were obtained from a dihybrid cross between two pea plants

A: Chi square test is a statistical test used to measure differences between observed and expected…

Q: A pure breeding strain of squash that produced disk-shaped fruits was crossed with a pure- breeding…

A: A dihybrid cross is a method in which the phenotypes of two genes are tracked by mating organisms…

Q: Consider these two crosses and assume that independent segregation is exhibited by all gene pairs.…

A: Introduction The Punnett square is a square diagram that is used to predict the genotypes of a…

Q: When traits show complete dominance, the genotype can be revealed by a test cross. In the example of…

A: Introduction  Monohybrid cross deals with one character controlled by one pair of alleles such as…

Q: from the following matings? What are the phenotypic ratios for each cross? Explain how you came up…

A: Gregor Johann Mendel was an Augustinian monk. He worked on garden pea for the genetic experiment and…

Q: A three-point cross was conducted, 8500 progeny were evaluated, and the genetic map was determined…

A: The genes that are located on the same chromosome will shows reduce amount of crossing over. In case…

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.