What conclusions would the scientists draw from this sequence? A. This protein is a derived feature, evolving multiple times. B. This protein is a primitive feature, present in basal vertebrates. C. The sequence of this protein is nearly identical in lampreys and humans. D. The sequence of this protein is not conserved between turkeys and chickens.

Q: After the glacial retreat at the end of the last ice age, some three-spine stickleback fish…

A: The formation of new species (speciation) occurs because of geographical isolation and mutation.…

Q: Flowering plants have common ancestors with other plants and plant-like organisms. The table below…

A: With time and evolution , species that are closely related to one another has similar amino acids…

Q: Flowering plants have common ancestors with other plants and plant-like organisms. The table below…

A: Flowering plants, also known as angiosperms, are a diverse group of plants characterized by their…

Q: You are studying Hox genes in crane flies (Leptotarsus testaceus). The cranefly genome is sequenced,…

A: To find: Where the homologue of EVE gene is expressed in cranefly embryos

Q: In the paper we read at the beginning of the term the coat color differences in the beach mice were…

A: The coat color differences in the beach mice were driven by change in the melanocortin-1 (MCR-1)…

Q: Nucleic acids are isolated and analyzed from different cells in a mammal. How would the DNA sequence…

A: The DNA sequence of a skin cell would be similar to that of a nerve cell. Since, both of them are…

Q: platypus is one of a very small number of mammals that are venomous. Researchers compared the…

A: Most important part in this paragraph is that the two proteins are almost similar in function and…

Q: Which of the following is FALSE about the human genome?      a. repetitive DNA is approximately…

A: The genetic makeup of every human being is 99.9% same. Differences in the 0.1 percent that is left…

Q: The first genetic material on Earth was probably (a) DNA produced by reverse transcription. (b) DNA…

A: Genetic material contains genetic information and transmits it from generation to generation.…

Q: What is the function of a gene (FOXP2) that is rapidly evolving in the human lineage?

A: The FOXP2 gene is responsible for providing the instructions for making a protein known as forkhead…

Q: The Brachyury and Tbx5 in vertebrates and the Ap3 gene in flowering plants a. are examples of Hox…

A: It is expressed in the developing notochord and the Brachyury gene of ascidians encodes a…

Q: An analysis of the human genome revealed that some regions of DNA that are highly conserved across…

A: Evolution has made every species become fit and has provided the species with reproductive fitness ,…

Q: You are a molecular biologist studying a defective human protein that is known to be a cause of a…

A: It is given in the question that the protein from the cancer patient differs in almost every amino…

Q: Which of the following is an accurate point that supports the idea that the earliest protocells…

A: DNA and RNA are the genetic material present in the cell.

Q: Which of the following proteins is thought to have been the first to evolve from an ancestral gene…

A: Hemoglobin is a protein that is present in red blood cells and plays a major role in supplying…

Q: Recall from our classes on molecular evolution that some proteins evolve more rapidly than others.…

A: The option is shown below.

Q: Scientists conducted research to examine the evolutionary relationship between 10 bird species and…

A: GC content varies greatly between different genomic regions in many eukaryotes. A  characteristic of…

Q: Denisovans are ancient humans. What would you least expect?   A. They would have a larger brain…

A: Evolution is the process by which an organism inherits or adapts favourable characteristics that…

Q: (I) Ordinary fish (II) Icefish 3 2 a-Globin gene 3 a-Globin gene fragment (pseudogene) 1 2 3 4 5…

A: Sequence alignment refers to the joining of two sequences based on the similarity of some portions…

Q: Based on the information above, what can you speculate about the possible evolution of the genes…

A: Rab proteins are small GTP-binding proteins within a superfamily of GTPases known as the Ras…

Q: Which of the following statements about the differential expression of human genes is correct?

A: There are three postulates of differential gene expression, two of which states that -  1. Every…

Q: How many globin genes are present in mammals? What is the evidence indicating that all the globin…

A: Genetics is a study of genes, heredity, and genetic variation in an organism. Living organisms…

Q: Which of the following statments are correct about protein evolution (select all that apply)?   A.…

A: Protein evolution refers to the evolution of protein structure, function, and composition over time.…

Q: Even when a gene is available and its sequence of nucleotides is known, chemical studies of the…

A: Proteins are polymers of amino acids which is translated from the mRNA. Gene (DNA) is transcribed…

Q: The SCAM data for positions V51C and Y96C are different to the other datasets. Describe how the data…

A: Western blot :It is a method for locating and identifying particular proteins in a sample of tissue…

Q: According to "Our Earliest Ancestors", why can’t scientists just do DNA analysis on these fossil…

A: DNA analysis is a powerful tool that can provide a wealth of information about an organism's genetic…

Q: The human proteome contains a much greater variety of proteins than would be predicted from the…

A: The total set of proteins expressed by the human genome, or the proteome, is immensely complex and…

Q: Cat DNA is much more similar to dog DNA than to tortoise DNA. Why? (a) Cats and dogs are both…

A: All living things have the same genetic material (DNA), comparable genetic codes, and the same…

Q: Which of the following statements about the differential expression of human genes is correct? A.…

A: The Human Genome Project states that genes in human vary greatly in size, ranging from a hundred DNA…

Q: a) Let's say the two motif hits (CCACGAG and CCGCCAG respectively) turn out to be evolutionarily…

A: Motifs are mainly short, conserved sequence patterns that are associated with specific function of a…

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.