In sunflowers, two plants heterozygous for mutant (recessive) alleles b and e are crossed. For each parent, recessive alleles b and e are in the trans configuration and 10.2 centiMorgans apart. If these plants are crossed, what percentage of progeny will be double mutants (be/be)

Q: In fruit flies, you are mapping three genes in a three point cross. The mutants are hairy body (h),…

A: To determine gene order, we will compare parental and double crossover progenies.

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: 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: The alleles his-5 and lys-1, found in yeast, result in cells that require histidine and lysine for…

A: "Genetics" is the study of the functioning and main codes of variation and heredity. Inheritance is…

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: The crossing of two orange-flowering plants results in 61 orange-flower progeny and 27 white-flower…

A: Introduction The passing on of traits from parents to their offspring is known as heredity, also…

Q: Female fruit flies from a true-breeding strain with yellow body and cut wings are mated to male…

A: The physical separation between the positions of two genes on a chromosome is referred to as the…

Q: The phenotype of vestigial (short) wings (vg) in Drosophila melanogaster is caused by a recessive…

A: It is given that the vestigial wing and hairy body are caused by recessive wings. These are encoded…

Q: In the fruit fly Drosophila melanogaster, the trait of black body is due to a gene on chromosome 2…

A: To determine the recombination frequency and genetic map distance between the two genes, we need to…

Q: || AB ||| AA 1 0₂ AA AB 2 BB 0₁ In this pedigree A and B represent alleles at a marker locus very…

A: Introduction : The study of a specific trait that is passed down from one generation to the next is…

Q: In a parental cross of a ADHL disease trait, where the father is affected and the mother is…

A: In the given case, let the dominant allele associated with ADHL disease be “A” and the allele…

Q: Mouse fur color is affected by TWO unlinked loci. GG or Gg mice are agouti. Mice with genotype gg…

A: The phenomenon by which the expression of one gene expression is modified by another gene. The…

Q: Three autosomal recessive mutations in yeast, all producing the same phenotype (m1, m2, and m3), are…

A: An autosomal recessive mutation means two copies of an abnormal and defective gene must be present…

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: d) Genes 1 and 2 exhibit Epistasis (9:6:1) and Gene 3 is an Autosomal Dominant. In the P generation,…

A: Epistasis is defined as a type of gene interaction when one gene mask or modify the expression of…

Q: A fly that is heterozygous at 3 different, independent, autosomal loci (AaBbCc) is crossed to an…

A: The genotype is defined as the genetic constitution or composition of an individual. Thus, it is the…

Q: In Drosophila the genes forked bristles (f and f+) and vermilion eyes (v and v+) are ~24 m.u.  apart…

A: During meiosis, genes between homologous chromosomes are transferred in genetic recombination, which…

Q: Two pumpkins plants have the following genotype: EeFfGg and EeFfGg. Assume genes E, F and G are…

A: Answer :- In genetics, the inheritance of traits in offspring is often governed by the principles of…

Q: Assume that the length of a type of cucumber at maturity is controlled by two genes (A and B), each…

A: Given: The A and B alleles each add 3 inches of cucumber growth. The a and b alleles add only 1…

Q: Cross 1 AaBb x AaBb Cross 2 AaBbCc x AaBbCc a) Please use a branching diagram to find the…

A: A branching diagram, also known as a Punnett square, can help determine the genotypic ratios of the…

Q: A recessive maternal effect mutant in zebrafish, called ichabod, results in embryos lacking heads…

A: Maternal effect in zebrafish is a situation where the phenotype of an organism is determined not…

Q: Purebred wrinkled, green-seeded pea plants were crossed with purebred round, yellow-seeded plants.…

A: In classic genetics experiments, the study of trait inheritance often involves the examination of…

Q: In cucumbers, speckled fruit color (u') is dominant to uniform fruit color (u), and large spines…

A: Given  Speckled fruit colour U+ is dominant to uniform fruit colour u  Large spines SS+ is dominant…

Q: IN DROSOPHILA, AN X-LINKED RECESSIVE MUTATION, Xm CAUSES MINIATURE WINGS. LIST THE F₂ PHENOTYPIC…

A: The cross involved here is X linked which means that mutation in one of the X chromosomes  in…

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

A: Autotetraploids are organisms that carry four copies of the same genome for example a homozygous…

Q: In crosses between mutant mice, you find the following patterns in the genotype for the A locus…

A: Given:Genotype data for the A locus containing alleles A1, A2, A3, and A4 in mutant mice.The…

Q: Assume that plant height is determined by a pair of alleles at each of two loci (A and a, B and b)…

A: In diploid organisms every chromosomes are present in two copies. So every genes have 2 alleles. In…

Q: Vestigial wing is a recessive autosomal mutation in the fruit fly Drosophila melanogaster. Wild-type…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: The genes responsible for albinism (A or a) and pink eyes (P or p) in mice are linked and wild-type…

A: The genes forms the hereditary units of the life. At the same time it consists of two alternative…

Q: Waxy endosperm (wx), virescent seedling (v), and shrunken endosperm (sh) are all recessive mutants…

A: Introduction: Endosperm is a tissue present inside the seeds of most of the angiosperms which…

Q: Assume that the length of a type of cucumber at maturity is controlled by two genes (A and B), each…

A: 1/8-10" , 3/8-8" , 3/8-6" , 1/8-4"

Q: In corn, the genes that determine seed color and coat are both located on chromosome 9.  Seed color…

A: This analysis of a corn dihybrid cross revealed that seed color and coat texture are controlled by…

Q: Three fruit shapes are recognized in the summer squash (Cucurbita pepo): disk-shaped, elongated, and…

A: Genes are the hereditary units of life. The inheritance pattern was introduced by Gregor Mendel,…

Q: An insect from a strain breeding for white eyes (RRww) was crossed to an insect from a strain…

A: When an organism is heterozygous, it has two distinct alleles of the same gene. For instance, pea…

Q: purple flowering, smooth seed dihybrid plant (genotype PpSs) is test crossed with a white flowering,…

A: Dihybrid cross is the cross in which two characters are involved. Its ratio is different when the…

Q: In some plants, a true-breeding, red-flowered variety gives all pink flowers when crossed with a…

A: Alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: In a certain plant, the dominant form of gene B codes for blue fruit, while the recessive form…

A: As per the question: F1 cross: Parents: Doubly homozygous dominant white fruited plant (EEBB) and…

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.