What is heterosis? Discuss whether it is caused by a single geneor several genes. Discuss the two major hypotheses proposedto explain heterosis. Which do you think is more likely to becorrect?

Q: How come reciprocal translocations always have same amount of genetic material? Aren't there…

A: Reciprocal translocations involve the exchange of genetic material between non-homologous…

Q: Species I has 2 n = 8 chromosomes and species II has 2 n = 14 chromosomes. What would the expected…

A: Trisomy is a type of aneuploidy that is characterized by the presence of an extra chromosome in the…

Q: What is diploid? Explain with the help of example?

A: Chromosomes are thread-like structures found in the nucleus of plant and animals. DNA is packed into…

Q: What is genetic linkage?

A: During the meiosis process of sexual reproduction, DNA sequences that are similar together on a…

Q: Species I is diploid (2 n = 8) with chromosomes AABBCCDD; related species II is diploid (2 n = 8)…

A: Chromosomes are defined as the thread-like structures that carry genetic information. Any change…

Q: Inspect this figure showing relations of parents and offspring in species with haplodiploid sex…

A: Relatedness value is the probability that two individuals share an allele due to recent common…

Q: In the hybridization of 2genes (4 different alleles, 2 ofeach pair) how does epistasisaffect the…

A: The Dihybrid cross is crossing between two organisms, being heterozygous to two different traits.…

Q: A neutral mutation arises in a diploid population of 10,000 individuals. Use this information to…

A: Mutation refers to a change in the nucleotide sequence of the DNA contained in the genome of an…

Q: Species I has 2 n = 8 chromosomes and species II has 2 n = 14 chromosomes. What would the expected…

A: The chromosomal mutations not only involve the change in the structure of chromosome rather it also…

Q: Species I is diploid (2 n = 4) with chromosomes AABB; related species II is diploid (2 n = 6) with…

A: Ploidy can be defined as the number of “complete sets of chromosomes” in a cell. According to the…

Q: Discuss the principles of the chromosome theory of inheritance. Whichprinciples do you think were…

A: Inheritance is the process by which genetic information is transferred from one generation to…

Q: Species I has 2 n = 8 chromosomes and species II has 2 n = 14 chromosomes. What would the expected…

A: Aneuploidy is also referred to as heteroploidy. In this, the individual has fewer or extra…

Q: In Figure 5-17, how many crossovers are required to produce a completely prototrophic exconjugant?

A: The cell division causes the formation of identical daughter cells from the parent cell. The types…

Q: What is meant by “patterning” during heterocystformation?

A: Heterocyst are specialized cells involved in nitrogen fixation in Cyanobacteria such as Anabaena and…

Q: How do examples of pleiotropy and epistasis differ in terms of the minimum number of loci required?

A: Various genes can interact with each other and differ from the normal Mendelian behavior. Pleiotropy…

Q: Which of the following statements about independent assortment and segregation is correct?     The…

A: Given:  The Statements about independent assortment and segregation.

Q: Phenotype wild Black body Black body wild wild Black body Black body wild Brown wild Brown Brown…

A: Gene order is defined as the arrangement of genes on the chromosome. Here, the data is given as: +++…

Q: Species I is diploid (2 n = 4) with chromosomes AABB; related species II is diploid (2 n = 6) with…

A: Autotriploidy is a condition, in which a normal gamete (n) fuses with a gamete that has not…

Q: An equational division of mitosis is occuring for a diploid organism that has three heterologous…

A: The gametes are produced by the process of meiosis. The meiosis is a reductional division.

Q: Heterozygotes are often healthy individuals because these mutations do not impact the dosages of any…

A: An inversion is a chromosome rearrangement in which a segment of a chromosome is reversed end to…

Q: For each of the following, identify what characteristics of a species male and female karyotype…

A: Answer :- Option (B) is correct. - XY sex chromosomes.

Q: Species I is diploid (2 n = 4) with chromosomes AABB; related species II is diploid (2 n = 6) with…

A: Chromosomes are long thread like structures present in all the cells of the body. They carry coded…

Q: Species I is diploid (2 n = 8) with chromosomes AABBCCDD; related species II is diploid (2 n = 8)…

A: Chromosomes are thread-like structure, which are composed of deoxyribonucleic acid (DNA) and…

Q: The life cycle of the haploid fungus Ascobolus is similar tothat of Neurospora. A mutational…

A: Ascobolus is the fungal genus and consists of around 48 species. It is considered to be a…

Q: How many different types of gametes with respect to the R and B genes can an individual with the…

A: An individual with the genotype Rrbb has two alleles for the R gene (R) and (r) and one allele for…

Q: Species A has 2?=82⁢n=8 chromosomes, and species B has 2?=142⁢n=14 chromosomes. Calculate all…

A: Species A: 2n=8, hence n=4. Species B: 2n=14, hence n=7. Allotriploid AB: alloploidy means…

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: Is Robertsonian translocation reciprocal?

A: Chromosomes are thread-like structures that are located in the nucleus. It is composed of protein…

Q: Species I is diploid (2 n = 4) with chromosomes AABB; related species II is diploid (2 n = 6) with…

A: Chromosomes are thread-like structure, which are composed of deoxyribonucleic acid (DNA) and…

Q: Do phylogenetically proximal species have cells with proximal chromosome counts?

A: Introduction - The idea of phylogenetic species (PSC) The idea of a species as an irreducible group…