Species 1 and 2 are sister species from which you’ve cloned related genes. On the gene tree on the top of the next page, use labels to answer the following questions:  (a) Label the node that represents a gene duplication with “D,” (b) Label the nodes that represent speciation events with “S,”  (c) Pick a pair of genes that are paralogs and label them both “P.” (d) Pick a pair of genes

Q: Which two traits on the gene map below for the fruit fly are most likely to cross over together?

A: The physical crossing over during meiosis of parental heterozygous homologous chromosomes or genes…

Q: Bacteria populations display genetic variation such as antibiotic resistance due to mutation. Which…

A: Bacteria reproduce asexually through a process called binary fission. In this process, a parent…

Q: (B) Y TRN TRN TRN TRN Y TRN TRN TRN TRN Y W TRN NRT (C) (D) a b c d TRN V W Y Z TRN TRN a TRN a b Y…

A: Chromosomal rearrangements are a reproductive barriers source and are recombination supressors.…

Q: Controlling the overgrowth of invasive aquatic vegetation is asignificant problem in the waterways…

A: Aquaculture is the practice of rearing and breeding fishes for ornamental, food and environmental…

Q: From the results of the experiment , explain how we know that the kiwis are more closely related to…

A: Kiwis, emu, moas, and cassowary are all flightless birds belonging to a diverse group called ratite.…

Q: Answer the following question in the following photo: 1) Which karyotype is from a human from the…

A: 1. Human Karyotype:  - The karyotype labeled as "Animal 2" is indeed from a human.  - The 46…

Q: strains of Drosophila that have either normal legs or abnormally short legs and you are studying the…

A: Law of dominance says that dominant character is expressed in two conditions either  in homozygous…

Q: Talk about the concepts of gene number, organismal complexity, and the C-value paradox. Give…

A: The concepts of gene number, organismal complexity, and the C-value paradox are all related to the…

Q: In mammals, more than one chiasma per chromosome arm is an indication that crossing-over has…

A: Chiasma is the point of contact between two non sister-chromatids.

Q: If a certain species has more chromosomes than another species, does that mean it has   (1) more…

A: Chromosomes are the genetic material that carries information from one generation to another…

Q: Charles Darwin’s claim, that the species level of classification is just as arbitrary as that of any…

A: The question is asking us to identify which of the given scenarios does not support Charles Darwin's…

Q: he hair keratin gene KRTHAP1 was lost in the human lineage. Keratins are a major component of hairs.…

A: Given information KRTHAP1 is the hair keratin gene that was lost in the human lineage. Keratins are…

Q: The plots above show the distribution of SNP alleles similar to Neanderthal genomes, in two ancient…

A: ANSWER : The statement that is NOT consistent with the data is:A) The maternal grandmother of…

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: Prezygotic isolating mechanisms prevent hybrid offspring from occurring between species because (a)…

A: One of the main criteria for speciation is the reproductive isolation between the different two…

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: X R 18 CM E 17 CM 9 cM L P 36 CM 20 CM S 12 CM G B

A: Linkage map:Linkage map or genetic map indicates the location of each gene or genetic marker on…

Q: Suppose researchers studied the first chromosome of a new species and mapped three genes of…

A: The location of the genes on chromosomes is dependent on crossing over. The genes are linearly…

Q: Assume you are studying development in two species of iguana. You determine that a certain gene,…

A: The answer is d heterochrony

Q: Two haploid strains of S. cerevisae (yeast) are crossed. One has the genotype ABC and the other abc.…

A: Introduction:- A gene is the most fundamental physical and functional element of heredity. DNA is…

Q: In 1-3 sentences:  define the term and the relationship between the terms (a) Deletion (b)…

A: A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is…

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

A: In complementation, parents are either mutated with same genes or mutated in different genes. In…

Q: Species A, B, and C are related according to the phylogeny below (A,(B,C)).  Species A and C…

A: Mutations are alternations in the genetic material of an organism. They can occur either naturally…

Q: Using the data listed above, construct a gene map between the genes R,S, and F. Calculate map unit…

A: A gene map, also known as a genetic map, illustrates the relative positions and distances between…

Q: Two part question:   An organism has one chromosome with genes ABcDE on one homolog and abCde on the…

A: Recombination is a process where the pieces are broken and recombined to form new combinations of…

Q: What is interspecific hybridization. Give an example?

A: Hybridization is the mating of genetically differentiated individuals or groups. It may involve…

Q: Which of the following are true statements regarding linkage disequilibrium? Please select all that…

A: linkage disequlibrium occur at  non-random.

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.