Two different enzymes both catalyze the same biochemical reaction– the conversion of precursor molecule x into pigment molecule y. Each enzyme is the gene product of a different locus. In cells with both enzymes, the flowers are red. In cells with only one of the two enzymes, the flowers are pink. In cells with neither of the two enzymes, the flowers are white. A geneticist selfs a dihybrid and counts 32 progeny.  What is the expected number of progeny that will have red flowers?

Q: Assume that diploid plant A has a cytoplasm genetically different from that of plant B. To study…

A: The plant will produce by ;

Q: Explain at the biochemical or enzymatic level, the phenotypic consequences of alleles incase of…

A: This is the phenomenon called incomplete dominance which is usually seen in snapdragons. In the…

Q: In the experiment of Figure shown, Stern followed the inheritancepattern in which females carried…

A: Step 1 Sex linkage is a linked group of genes found along with sex controlling genes as present on…

Q: You are investigating two temperature-sensitive mutant cells. In one, you can inactivate shugoshin…

A: Shugoshin inhibits chromatid separation during anaphase I by preventing separase degradation of…

Q: Consider the first category of test-cross offspring shown in figure 8.2 (+b, LS). Consider also that…

A: In the test-cross in question, heterozygous female flies with the genotype +b, LS were used. In…

Q: Select the best process listed below for each of the following statements. Note that you need to…

A: Homologous sets of genes are located on the non homologous chromosomes. Crossing over between…

Q: In a study, an undergraduate student discovered a new enzyme involved in the metabolism of…

A: Enzymes are usually protein molecules which catalyzes several biochemical reactions. It works as a…

Q: You are studying a plant with tissue comprising both green and white sectors. You wish to decide…

A: Variegation in plants refers to a phenomenon that produces plants with different colours on their…

Q: A line of mouse cells is grown for many generations in a medium with 15N. Cells in G1 are then…

A: If a line of mouse cells is grown for many generations in a medium with 15N. The chromosome contains…

Q: A heterozygous diploid yeast Aa Bb went through meiosis. What percentage of the haploid spores will…

A: Recombination is defined as the process or method by which the DNA pieces are broken down and are…

Q: In the following schematic drawing of a Holliday junction,one chromatid is shown in red, and the…

A: a) Cuts should occur at positions 2 and 4 to get recombinants. A Holliday model can be resolved in…

Q: A cross between yeast strains ab x AB produces the following unordered tetrad a. Label each group of…

A: Tetrad analysis is a powerful tool for studying genetic linkage and recombination in yeast. By…

Q: Two yeast strains were mated. One was red with mating type A the other was red+ with mating type B.…

A: 41        red+     B     (Parental) 43        red       A     (Parental) 10        red+     A…

Q: Imagine that you have done a cross between two strains of yeast, one of which has the genotype A B C…

A: The scoring patterns in both tetrads indicate that recombination has occurred between genes A and C,…

Q: Growth Rate 80 red fast 88 purple slow 18 red slow 14 purple fast What is the distance…

A: Here, in 3rd and 4th case there are recombinant progenies because they have different growth rate…

Q: The wingless fruit fly phenotype (unable to grow wings) is recessive to normal wing growth. A…

A: The wingless male fruit fly is crossed with a wingless female fruit fly and the progeny produced by…

Q: hanges in Chromosome Structure and Number The Poinsettia type of Datura is trisomic for the…

A: Genetics is the study of how traits are passed down from generation to generation. Chromosomes are…

Q: In Neurospora, a mutant strain called stopper (stp) arose spontaneously. Stopper showed erratic…

A: The genes are the hereditary unit of an organism which are passed on from the parental generation to…

Q: The balancer chromosome includes GFP and a mutation in gene X that causes flies to be sterile in the…

A: A homozygous mutation is one that affects both the paternal and maternal alleles. Compound…

Q: The gene that controls the Duffy blood type is D (affected D is dominant to d) and the gene that…

A: D allele encodes duffy blood type and it is dominant over d allele. dd encodes wild type.  L allele…

Q: phenotypes: 42 MP; 374 Mp; 367 mP; 27 mp.  What can you conclude from these data

A: Recombinant offspring are children that have a different allele combination to their parents.

Q: A recessive mutation pd causes purple eyes in Drosophila, in contrast to the wildtype red eyes. A…

A: The objective of this question is to determine the proportion of offspring that will have purple…

Q: You've crossed two strains: (Hfr) leu+ his+ bio+ with (F-) leu-his-bio- . Interrupted mating studies…

A: In biology, genetic recombination is the process by which genetic material is exchanged between…

Q: what is the approximate map distance between the two genes?

A: Linkage is a phenomenon which determines how genes are placed in close proximity to each other.   It…

Q: A RFLP is discovered that is linked to the gene for Duchenne’s muscular dystrophy (DMD). DMD is an…

A: RFLP (Restriction Fragment length polymorphism) : RFLP (Restriction Fragment length polymorphism is…

Q: Mutation

A: A) Genetic in drosophila have provided a wealth of information about a variety of cellular and…

Q: In the species Polyfarius obscescens, one gene controls lipid storage. Individuals with the dominant…

A: Storage lipids, also known as triacylglycerols, membrane lipids, which include glycerophospholipids…

Q: Eye colors are passed down through generations, but sometimes genetic variations can lead to…

A: Introduction :- The term "mutants" generally refers to organisms with a genetic mutation, which is a…

Q: You perform a cross between two plants, one MmPp and one mmpp, and obtain offspring with the…

A: Introduction Recombination or crossing over is a phenomenon which occurs during meiosis. During…

Q: aa e ui8ag o1 pai 10,000 progeny were analyzed for each cross. Of 10,000 progeny, there were: Three…

A:

Q: If the line 3 butterflies are crossed with the line 5 butterflies and they produce all extra-long…

A: During the genetic crossing, the parents give rise to their offspring. The offsprings have a…

Q: During the course of a research project you generate a gene knockout line in Arabidopsis thaliana to…

A: Gene knockout is a technique through which a gene is inactivated by altering or manipulating the…

Q: QUESTION 11 The location of five deletions have been mapped to a Drosophila chromosome, as shown in…

A: To determine the order of the genes (a-e) on the chromosome, we can analyze the complementation…

Q: L, R, P and D are four genes located on the same chromosome in a diploid organism. Map distances…

A: Genetic mapping is a technique to determine the relative position of genes on a chromosome and their…

Q: What fraction of their babies will be:

A: ABC ABc AbC Abc aBC aBc abC abc ABc AABBCc AABBcc AABbCc AABbcc AaBBCc AaBBcc AaBbCc AaBbcc…

Q: a geneticist has obtained 2 true-breeding strains of mice, each homozygous for an independently…

A: The homozygous mutation is generally recessive and the two true breeding mice exhibiting the same…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.