Describe how modern organisms can be used to determine evolutionary relationships.

Q: Name and describe several features that determine the shape of ecological systems.?

A: An ecological system is also known as an ecosystem. The ecosystem is defined as the interaction betw...

Q: e recessive allele

A: Microevolution on a small scale, is defined as a change in the frequency of gene variants, alleles, ...

Q: The______ are parts of a mature seed. a. stamen, anther, and pollen grain b. embryo, food reserves, ...

A: Sexual reproduction is a natural interaction by which higher organisms, like well-evolved creatures,...

Q: One tube has (saliva + potato chips), the second tube contains (boiled + potato chips), and the thir...

A: This scenario based on the breakdown of carbohydrates. When we eat carbohydrates our body breakdown ...

Q: Retrograde amnesia results when consolidation is speeded up. T or F?

A: The term amnesia is associated with the memory loss. The memory loss can occur partially or complete...

Q: Capillary Refill Results: Table 2 Right Hand Refill Time Left Hand Refill Time Thumb Middle Pinky 1....

A: Capillary refill test is a rapid test used for assessing the blood flow through peripheral tissues.I...

Q: What are riboswitches? How do they control gene expression? How do riboswitches differ from RNA-medi...

A: Riboswitches are RNA elements. They control the gene expression. They bind to small metabolites. The...

Q: Xias father has type B blood (lBi) while her mother has type A (lAi) blood. What are the possible bl...

A: Blood type (or blood group) is a genetic trait linked to the presence or absence of particular molec...

Q: Question 7 The long solenoid structure of the chromatin material binds to a protein scaffold through...

A: The long solenoid structure of chromatin material is Histone molecule. Histones, which attach to DNA...

Q: Define homeostasis and explain its significance.

A: Introduction: Homeostasis is the tendency to resist change in order to maintain a stable and constan...

Q: Meiosis Il is similar to mitosis in that chromosomes number is reduced. True O False

A: Meiosis(Reduction division)  It occurs in eukaryotic life cycle Involving sexual reproduction.  It ...

Q: . A chicken breeder is working with a population in whichthe mean number of eggs laid per hen in one...

A: Heritability does not reflect the degree to which a trait is genetic; rather, it measures the propor...

Q: Because genetic engineering involves the modification of an organism's set of instructions, it has c...

A: * Genetic engineering means it is the process of using rDNA technology to alter the genes of organis...

Q: Parts? Any accessory Begin and ending Organs of the Gl tract Chemical/ Chemicals? Which and what do ...

A: The long narrow and coiled part of alimentary system that starts just below the stomach, where both ...

Q: eunique stem-loop structures of the transfer RNA helps the RNA perform its function of joining ribos...

A:  Unique stem-loop structure, also known as hairpin loop. This is a type of secondary structures of R...

Q: How are the specific cell types patterned correctly? How does the flatwormtell the posterior blastem...

A: Planaria are flatworms that reproduce asexually through fragmentation (not binary fission, which is ...

Q: Which is NOT true about human stomachs? Group of answer choices stomach acid helps kill germs stomac...

A: The digestion of proteins begins in the stomach and is completed in the small intestine. The digesti...

Q: Identify two (2) important protozoan parasites of humans and discuss their importance in human healt...

A: Protozoa are single celled, microscopic, free living organism or that can be parasitic in nature. It...

Q: Which of the following is FALSE? A. Bile is a fat molecule-busting enzyme B. Vitamins are organic co...

A: The digestive system is responsible for digestion and absorption of nutrients from the consumed food...

Q: What is the difference between global warming and the greenhouse effect?

A: All living and non-living things that are found naturally, that is, not artificially, are included i...

Q: Complete the table about the parts of the digestive system for extra practice/studying Organs of the...

A: Digestive system consists of a GI tract (Gastrointestinal tract) where the digestion process takes p...

Q: Name an example of an ectotherm living a homeothermic life

A: The ectotherm living a homeothermic life examples- fishes, amphibians, reptiles etc.

Q: How is the poly(A) tail added to pre-mRNA? What is the purpose of the poly(A) tail?

A: Translation termination occurs when prokaryotic cell recognizes nonsense codon which includes UAA, U...

Q: Actinomycetes are thin, beaded, branching, positive rods that are aerobic. Nocardia spp. and Strepto...

A: **As per our guideline, we are supposed to answer only one question at a time. Please resubmit the o...

Q: what is the purpose of filling an API rapid 20E incubation tray with water

A: The goal of this study was to see how well the API 20E and API Rapid NFT systems worked for identify...

Q: Which forest type is most under threat due to Palm Oil Agriculture?  A. Tropical Rain Forest B. Tem...

A: Introduction Among all perennial crops, the oil palm crop produces the biggest amount of oil (palm o...

Q: All of the following statements regarding nucleosomes are true EXCEPT A each bead-like structure con...

A: The length of DNA is about 5 feets. This 5 feets long DNA needs to be placed in nucleus of every cel...

Q: The purification continues with a cation exchange step in which the positively charged cytochrome C ...

A: A linear XY linear graph for the equation. A straight line "y = mx + b" where y = absorbance at 595 ...

Q: Auxotrophic mutation 103 grows on minimal medium supplemented with A, B, or C; mutation 106 grows on...

A: Auxotrophic organisms are mutant organisms, particularly mutant microorganisms. They have lost the a...

Q: Frog Testis 1. pointed cells? 2. cell origin of #1? 3. specific process that produced #1? 4. one str...

A: Testes is a male reproductive cell. 

Q: How would DNA replication be affected in a bacterial cell that is lacking DNA gyrase?

A: A cell is categorised into two broad categories which include prokaryotic and eukaryotic cells. A pr...

Q: A number of scientists who study cancer treatment have become interested in telomerase. Why? How mig...

A: Cancer is a gathering of in excess of 100 unique sicknesses. It can foster any place in the body. No...

Q: What is the one gene, one enzyme hypothesis? Why was this hypothesis an important advance in our und...

A: The fundamental morphological and physiological unit of heredity is the gene. DNA makes up genes. So...

Q: Question 9 The structure of the transfer RNA assumes a more 3-dimensional structure because of the h...

A: The tRNA or transfer RNA is responsible for delivering amino acids at the site of translation. tRNA ...

Q: Which of the following is the greatest threat to the world's Grasslands?  A. Overharvesting B. Agri...

A: Answer : the greatest threat to the world's grasslands is :  b)  agriculture 

Q: The sexual response of males is quite different than that of females. T or F?

A: Its True that the sexual response of males is quite different than that of females.

Q: Having identified the genetic identity of the parent cats, fully proof your answer to show the simul...

A:     One copy of the genetic code is known to be inherited from the mother's parent with the he...

Q: Pregnant women can benefit from a folic acid suppleme A. True R EalsA

A: Vitamin is an organic molecule that is an essential vitamin that an organism needs in modest amounts...

Q: A geneticist induces a mutation in a cell line growing in the laboratory. The mutation occurs in a g...

A: Eukaryotic mRNA molecules undergo post-transcriptional modifications.  

Q: How does agriculture, economy and plant physiology interconnected?

A: The term Agriculture, economy and plant physiology though seems to be different, they are actually i...

Q: Question 18 Ribosomes are made up how much RNA component? A 50% B 1/3 c) 2/4 D 2/3

A: The ribosomes are involved in translation that is responsible for the production of polypeptide chai...

Q: The number of microRNAs encoded by the genome varies widely among organisms: some species have many ...

A: miRNA is a sub-set of non-coding RNAs that are transcribed by RNA polymerase II to form primary miRN...

Q: Which of the following features is associated with the Watson and Crick model of the DNA? sugar-phos...

A: Introduction: Because the two DNA strands are antiparallel, the 5' end of one faces the 3' end of th...

Q: How does application of DNA sequencing help Black (and other) populations in establishing their fami...

A: The technique of determining the exact sequence of nucleotides in a strand of DNA is known as DNA se...

Q: Can we manage future agricultural production in ways that feed the growinghuman population in a sust...

A: The quantity of food humans generate today versus the amount required to feed everyone in 30 years f...

Q: What are isoaccepting tRNAs?

A: Ribonucleic acid (RNA) is a polymeric molecule that plays a variety of roles in biology, including g...

Q: Small RNA molecules are involved in numerous genetic processes, including replication, translation, ...

A: Introduction: The two types of nucleic acids are RNA and DNA. The nucleic acid serves as a repositor...

Q: 1. How can the flagellum of euglena enable it to move? 2. What is the importance of eyespot and gull...

A: 1. Before directly knowing about how the flagellum of euglena enable it to move we should know about...

Q: What characteristics are most commonly found in rho-independent terminators?

A: Transcription is terminated in bacteria by two mechanisms: intrinsic (Rho-independent) termination a...

Q: Major groove contains much more chemical information than the minor groove has. These molecules incl...

A: In DNA base pairs are located in a mannered fashion with different bonds. Major and minor grooves ar...

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.