Domestic dogs are closely related to wolves. Wolves have one copy of the gene that encodes the enzyme amylase. Amylase is required to digest starch. Dogs have between 4 and 30 copies of this gene. Explain how the new copies arose in the genome of the domestic dog. Compare this to the evolution of lactase persistence in humans. Explain how the diet and environment of a dog compared to a wolf would result in fixation of the duplicated gene. What possible explanation is there for the variation of copy number among dog breeds?

Q: Kindly answer this question

A: The bacterial recombinants show greater genetic variation because they not only contain the genome i...

Q: List the four characteristics of a protein-binding site?

A: Proteins are the polymers of amino acids.

Q: What are the implications of charles spearman's theory general intelligence?

A: The capacity to understand, learn from experience, resolve issues, and adjust to changing conditions...

Q: Females are born with about 2 million primary oocytes in their ovaries. How many primary oocytes are...

A:

Q: Compare the reductionist and systems approaches to biological research.

A: To compare: The reductionist and systems approach to biological research. Concept introduction: Biol...

Q: In-vitro fertilization occurs in the laboratory. The resulting embryos remain in a laboratory cultur...

A: Fertilization The egg is viable for 12 to 24 hours after ovulation. Sperm are viable for 12 to 48 h...

Q: Which of the following is synthesized from a DNA template? (Select one) a. Transducer RNA b. ribosom...

A: The short stretch of DNA that serves as a functional unit of heredity is called the gene. The produc...

Q: In which two phases of mitosis would you find a nuclear membrane (or at least fragments of it)? Grou...

A: Cell division is the process of division of cell into daughter cell. The cell division can take plac...

Q: What is Active Transport?

A: Cells exchange materials with their surroundings.  

Q: Describe how ion movement generates the action potential.?

A: Introduction  Chloride is the most abundant anion in the extracellular fluid. Along with Chloride So...

Q: Biology Question

A: A swim bladder is also reffered to as a "air bladder" or "gas bladder" a gas-filled pouch that sits ...

Q: Structure and function of brain through diagram

A:

Q: Describe the general principles of the control of body temperature?

A: Introduction  Humans and Aves are known to be endothermic animals. Endothermic animals are those whi...

Q: Describe four common components that are found in all cells.

A: All Prokaryotes and Eukaryotes have four common components that are found 1. Plasma membrane:  The p...

Q: What are some biological advantages of a clumped dispersion? What are some disadvantages?

A: To explain Some of the biological disadvantages of clumped population dispersion. Introduction: Popu...

Q: Define the Testing for Hardy–Weinberg Equilibriumin a Population ?

A: A population can undergo mutations, selections, gene flow, etc during breeding and evolution. Thus t...

Q: Describe some common disorders of hearing andequilibrium.

A: Ear is the sense organ that is responsible for hearing. In humans and other mammals, the ear consist...

Q: Kindly answer this question

A: Escherichia coli and Pseudomonas aeruginosa both are gram negative bacteria that can cause severe il...

Q: Mitosis and meiosis are both forms of cell division but have several fundamental differences. One of...

A: Answer: Cell Division is the fundamental process of any cell which is divided in to two types : Mito...

Q: Identify the accessory digestive organs and briefly state their function

A: The digestive system includes the organs involved in the digestion and assimilation of the ingested ...

Q: Explain the relationship between genotypes and phenotypes in dominant and recessive gene systems

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that con...

Q: When a chromosome is doubled, the two parts have... Group of answer choices   A. the same genes a...

A: Cell is the smallest structural and, functional unit of life. It is simple machinery that houses all...

Q: DNA is a chemical that cells use to store information. Describe how information is encoded in DNA, a...

A: DNA is Deoxyribo Nucleic Acid which is a complex molecule which consists of two polynucleotide chain...

Q: The synthesis of glucose from noncarbohydrates is called (a) glycolysis. (b) lipolysis. (c) gluconeo...

A: Biological molecules are chemical substances that occur in living organisms, and aid in performing v...

Q: Triple Sugar Iron (TSI)Agar Report Slant/Butt reaction (use the letters): ______________________ H2S...

A: Triple Sugar Iron Agar Test It is defined as a microbiological test which is used to test the abilit...

Q: Sulfur Indole Motility (SIM) Medium H2S produced, color and +/-: ______________________________ Indo...

A: Sulphur indole motility medium used to test the ability of am organism to have properties of reducti...

Q: What is the definition of a community? two or more populations of organisms all the organisms of th...

A: In terms of biology, the community is defined as the gathering or group of different species who coh...

Q: In tabular form list down at least 4 differences between Mitosis and Meiosis                      Fi...

A: Mitosis It is a process of asexual reproduction in which the cell divides in two producing a replica...

Q: How does a person contract warts?

A: Common warts are also called verruca vulgaris.

Q: What functions does complement have in inflammation and cellkilling?

A: In response to antigenic stimulation, antibodies are produced which are immunoglobulins. The antibod...

Q: What are three new classifications of food proposed in the 21st Century?

A: Food classification assigns foodstuffs according to the extent and purpose of the industrial process...

Q: Which of the following is not an adaptation of pine needles to conserve water? (a) less surface area...

A: Pine trees carry out their fundamental task to transform energy from the sun into fuel for which the...

Q: Badly needed your help...can someone answer this please,do not ignore please...true answers please.....

A:  To get the remaining sub-parts solved, please repost the complete question and mention the sub-part...

Q: Which of the following situation leads to decreased fertility? Select one: A. Hepatitis B Infection ...

A: Fertility refers to the ability of individuals undergoing fertilization to conceive a child. Many fa...

Q: The human digestive system has evolved to efficiently process regular meals, and many of us eat norm...

A: Taking meals on a time routine will help maintain the digestive system in good shape.” Whenever you ...

Q: Which of the following undergoes the greatest change during the uterine cycle and which hormone is p...

A: Uterine cycle prepare the uterus for the implantation of the fertilized egg or fetus. It involve men...

Q: How are innate lymphoid cells, including natural killer cells, distinguished from lymphocytes? a- st...

A: The immune system of the body is responsible for providing protection to the body when toxic pathoge...

Q: The difference between sympatric and parapatric speciation is ___ .a. parapatric speciation occurs o...

A: Introduction: The evolutionary process where new species are evolved from the old or existing specie...

Q: Describe the structure of nucleosomes and the 30-nm fiber, andexplain how the 30-nm fiber forms radi...

A: Genetics is a part of science worried about the investigation of genes, genetic variety, and heredit...

Q: In c. elegans, genetics model organism, movement problems (unc) and small body size (sma) are encode...

A: Linkage is defined as the transmission pattern of genes when they are present on the same chromosome...

Q: Nondisjunction is an error in the gamete-production process. Describe how it happens, and the specif...

A: Chromosomal non-disjunction is the phenomenon where the chromosomes fail to separate equally during ...

Q: Why are most ammoniotelic beings aquatic animals?

A: The excretory system is the system that filters the blood and removes waste and toxic substances fro...

Q: Which of the following is not part of how we definea species?a. Its individuals appear different fro...

A: Species are the basic units of hierarchy in biological classification. Organisms of the same nature ...

Q: What are the functions of the pulmonary system?

A: The human respiratory system (pulmonary system) helps in breathing the oxygen rich air and expiring ...

Q: Which of the following is/are characteristic(s) of dominant traits in pedigrees? 1 - Affected childr...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: Interconnected food chains are known as producers populations food webs habitats

A: An ecosystem is a community or group of living organisms that live in and interacts with each other ...

Q: What naturally occurring event could rescue the corpus luteum and prevent its degeneration starting ...

A: Menstruation can be defined as bleeding from the uterus of adult females at intervals of one lunar m...

Q: A denatured protein has lost its _______ .a. hydrogen bondsb. shapec. functiond. all of the above

A: Proteins are a complex substance that is present in all living organisms. It contains a good nutrien...

Q: How has Blue biotechnology been used to combat the COVID-19 pandemic?

A: Blue biotechnology :  It is associated with aquaculture , coastal and marine biotech.  It is associa...

Q: Explain the difference between an exon and an intron?

A: Introduction  A genome is consisting of transcriptionally active genes. These genes form mRNA as the...

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.