Q: What characteristic of a genomic island suggests that it originated in another species?
A: A genomic island is defined as the portion of the genome which gives the idea with the evidence of…
Q: What are the caharacterstics features of a true breeding line?
A: Genetics is the branch of Biology dealing with the study of genes including their structure,…
Q: What is speciation continuum?
A: Speciation continuum It can be defined as the continous sequence of genetically based changes that…
Q: How does an asexually reproducing eukaryotic organismproduce offspring that are genetically…
A: Asexual reproduction makes an exact copy of the parent, there is no variation or very little…
Q: How is it that the embryo sacs of some apomictic species look normal but contain diploid cells?
A: Apomictic species are the ones that undergo asexual production of a seed from the ovule's maternal…
Q: How many genes influence the formation of new species?
A: Formation of new species is known as speciation. In speciation, two different population must breed…
Q: How can we determine if an organism that does not reproduce sexually is a distinct species?
A: Reproduction is the method through which organisms maintain their number and it is the process to…
Q: How have chloroplasts and mitochondria changedsince the initial endosymbiosis events, which occurred…
A: In 1905 the endosymbiotic hypothesis was first enunciated by the scientist of Russia Konstantin…
Q: what process is important for creating genetic variability among organisms that reproduce primarily…
A: Given: Process that is important for creating genetic variability among organisms that reproduce…
Q: ive barrier is most likely to prevent interbreeding between a polyploid species and its diploid…
A: Speciation can be defined as the splitting of the population into two or many species, such that the…
Q: What is convergent evolution and how is it differentfrom horizontal gene transfer?
A: The change in the heritable characteristics of the species across many generations is called…
Q: Allopolyploids Are Hybrids withComplete or incomplete Chromosome Sets fromTwo Different Species?
A: Heredity as we know is the passing on of traits from parents onto their offsprings. Organisms that…
Q: What special event happens during Prophase I that leads to increased diversity of the offsprings
A: The Prophase - I is a part of the Meiotic cell cycle .
Q: Explain the processes involved in autopolypoilization as well as allopolyploidization and how these…
A: Autopolyploidy is a type of polyploidy in which there is a numerical increase of the ame genome,…
Q: How do haploid and diploid nuclei differ?
A: A biological cell is a hub of biochemical activities. Numerous physiological and biochemical…
Q: What is a recombianation event?
A: Recombination does occur when two molecules of DNA exchange pieces of their genetic material with…
Q: Where do spirogyral lateral conjugation takes place?
A: Conjugation is the process of genetic material transfer between two cells through direct cell…
Q: why Mitochondrial Genomes VaryAmong Species?
A: A single mitochondrion contains several copies of its genome within the matrix. The number of copies…
Q: What are ancestral chromosomes?
A: Chromosomes are the contents of cell nucleus which contains all the genetic information of a…
Q: What factors can support the long-term stability of a hybrid zone if theparent species live in…
A: A hybrid is an offspring resulting from combining the qualities of two organisms of different…
Q: What is the definition of gene flow? How was gene flow blocked between these species?
A: Gene flow, also known as gene migration, is the transfer of genetic material from one population of…
Q: explain how Polyploids with an Even Numberof Chromosome Sets Can BecomeNew Species?
A: Ploidy is the number of the set of chromosomes in the eukaryotic cells or organisms.
Q: explain how Robertsonian translocations can reshapegenomes
A: Translocation can be defined as the movement of DNA (deoxyribonucleic acid) sequences in between two…
Q: What is speciation?
A: Introduction In this question we will discuss about the speciation.
Q: How do scientists use mitochondrial DNA to estimate reproductive isolation?
A: Mitochondria are cell organelles present in aerobic eukaryotes that take part in oxidative…
Q: If m-m- females produce useless eggs, then how are m-m- produced?
A: Sexual reproduction refers to the form of reproduction that occurs through the union of male and…
Q: Why do species usually have a characteristic number of chromosomes? Why don’t we see many species in…
A: Chromosomes are rod shaped chromatin fibres which appear only during karyokinesis. They act as a…
Q: Most Organisms TolerateAneuploidy for SexChromosomes explain
A: Aneuploidy is the condition when the abnormal number of chromosomes are present in the cell. For…
Q: Species I is diploid (2 n = 8) with chromosomes AABBCCDD; related species II is diploid (2 n = 8)…
A: Mutations result from mistakes in cell division that cause a section of a chromosome to break off,…
Q: Describe the phenotypic consequences of deletions inhomozygotes
A: Mutation is the addition, deletion or change in position of a fragment of a base in the DNA that may…
Q: Using whole-genome sequencing, how couldyou distinguish between autopolyploids andallopolyploids?
A: Polyploidy is the condition of presence of more than two sets of homologous chromosomes in a cell.…
Q: What characteristic property of translocations causesscientists to believe that these rearrangements…
A: The chromosomal translocation is a natural phenomenon in which a chromosomal segment is moved from…
Q: why do the embryos of different species resemble each other?
A: The embryo is an early stage of development in multicellular organism (from fertilization to start…
Q: Do phylogenetically proximal species have cells with proximal chromosome counts?
A: Phylogenetically proximal species are the species that close on the phylogenetic trees and had the…
Q: Explain Aneuploidy in the Human Population?
A: Genetic disease is of 2 types including Mendelian disorder (alternation or mutation in the single…
Q: How, then, can speciation occur if gene flow exists?
A: Speciation are group of interbreeding natural population . Speciation is the formation of one or few…
Q: A single plant twice the size of others in the same populationsuddenly appears. Normally, plants of…
A: Photosynthesis is carried out by the plant, which is a multicellular eukaryotic organism. Plants,…
Q: Which type of chromosomal abnormality—deletion,duplication, inversion, or translocation—would you…
A: Chromosomes are thread-like heritable structures that hold genetic information in the form of genes.…
Q: In Figure 20-18, what is the evidence that polyploid formation has been important in plant…
A: Polyploidy Heritable disorder The presence of more than two full sets of chromosomes distinguishes…
Q: How do hybridization and polyploidy cause a new plant species to form in as little as one…
A: Polyploidy has a tendency to increase the species diversity that occurs within groups of organisms.…
Q: What are P, F1 , F2 generations?
A: These generations are labelled in a genetics experiment. It is important to label the different…
Q: why do Most Organisms TolerateAneuploidy?
A: There are 23 pairs of chromosomes in which 22 pairs are the autosome and 1 pair is the sex…
Q: As we focused on linkage,chromosomal mapping, and many associated phenomena.In the pIn this chapter,…
A: A chromosome is a single piece of DNA whereas genes are segments of DNA positioned along a…
How could chromosomal rearrangements lead to the emergence of
new species?
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- Why must the life cycle of sexually reproducing species alternate between haploid and diploid stages? A) Mitosis must occur at some point in the life cycle to prevent a doubling of chromosomes in each generation. B) Meiosis must occur at some point in the life cycle to prevent a doubling of chromosomes in each generation. C) Mitosis must occur at some point in the life cycle to prevent a reduction of chromosomes in each generation. D) Meiosis must occur at some point in the life cycle to prevent a reduction of chromosomes in each generation.Which reproductive barrier is most likely to prevent interbreeding between a polyploid species and its diploid sister species?What is meant by Euploidy?
- What is one statement that would support the theory that all organisms are related? A) The genetic code is almost universal.B) All flies have 2 wings.C) Eukaryotes have mitochondria.D) Prokaryotes have circular chromosomes.E) That the Theory of Pangenesis has held up to scrutiny for thousands of years What is the difference between cross and self-fertilization? A. In cross-fertilization the gametes from one plant are used to fertilize the gametes of another plantB. In cross-fertilization the gametes from one plant are used to fertilize the gametes from the same plant C. In self-fertilization the gametes from one plant are used to fertilize the gametes from another plantD. In cross-fertilization insects are used to pollinate the plants while in self-fertilization the investigator pollinates the plantsIs Neurospora haploid or diploid?How have chloroplasts and mitochondria changedsince the initial endosymbiosis events, which occurred hundreds of millionsof years ago?
- As we focused on linkage,chromosomal mapping, and many associated phenomena.In the pIn this chapter, we focused on linkage,chromosomal mapping, and many associated phenomena.In the process, we found many opportunities to consider themethods and reasoning by which much of this informationwas acquired. From the explanations given in the chapter,what answers would you propose to the following fundamentalquestionrocess, we found many opportunities to consider themethods and reasoning by which much of this informationwas acquired. From the explanations given in the chapter,what answers would you propose to the following fundamentalquestion ? How do we know that crossing over results from a physicalexchange between chromatids?If the parent diploid cell starts with 12 Chromosome and undergoes mitosis, then how many will the daughter cells have?A) 48 B) 12 C) 5 D) 24 20. If the parent diploid cell starts with 48 Chromosome and undergoes meiosis, then how many will the daughter cells have?A) 48 B) 12 C) 5 D) 24Diploid = 2n with n being # of chromosomes so, a) Haploid = n b) Haploid = 3n
- What special event happens during Prophase I that leads to increased diversity of the offsprings?Plant breeders use colchicine to A) prevents cytokinesis in somatic cells B) increase the occurrence of unequal crossing over events during meosis C) stop the segregation of homologous chromosomes during meiosis D)  triggers the production of haploid gametes and diploid organismWhich sentence does not describe a way in which genetic variation increases during meiosis? A) Random segregation of homologous chromosomes during metaphase/anaphase I. B) Random mutation of the genetic code during DNA replication. C) Random segregation of chromatids during metaphase/anaphase II. D) Crossing-over of homologous chromosomes, to exchange parts of their arms. 2. Choose the correct word to describe the physical, biochemical and behavioural characteristics of an individual, caused by how their genes interact with the environment? A) Morphology B) Genotype C) Physiology D) Phenotype 3. 0000 A) 25 % B) 50% C) 75 % D) 100 % 0000 Two individuals who are heterozygous for gene Y have a child. What is the probability that their child will be heterozygous for the gene? 0000