Which of the following is not a contributor to genetic variation? (a) binary fission (b) crossing-over of homologous chromosomes (c) random assortment of homologous chromosomes (d) fertilization

Q: Please describe the endocrine system of both male and female asian elephants

A: The endocrine system can be described as a system combining glands and hormones released by the…

Q: Construct a dichotomous key for Chaetognatha families:

A: A dichotomous key is a scientific tool used to identify an organism based on its characters. A…

Q: Let's Evaluate 1. Match the processes in column A to the terms in column B. list or to esmyzoal" A…

A: The cell membrane is a semi-permeable membrane. It allows the movement of certain molecules across…

Q: From the ectodermal epithelium of the lining of the upper part of the intestinal fossa of the human…

A: Introduction :- Skin, sweat glands, skin sensor receptors, and hair follicles are just a few of the…

Q: What does the neuron composition of the dorsal root ganglion tell you about sensory coding in the…

A: Step 1: Dorsal root ganglions (DRG) are sensory neurons that carry sensory messages from the…

Q: What hormonal changes lead to menopause?

A: Menopause means the end of the menstrual cycle. Menopause generally occurs at the of 45 to 55. It…

Q: 8:52 AM Sun Sep 4 Students Home Dive duration (s) Max dive depth (m) 53.82048397 32.89114327…

A: Predation is an ecological interaction where one organism kills another one to eat. The organism…

Q: If the starting frequency of AA is 0.7, what is the frequency of the a allele? Review the Hardy-…

A: According to hardy weinberg principle the formula used here is p+q=1

Q: QUESTION 3 When a bacterial cell with a cell wall is placed in salt water with a higher-solute…

A:

Q: IV. In the following table, put a check in the box to show the organelle is present in prokaryotic…

A: Prokaryotes are those cells which do not have a true nucleus and lack membrane bound organelles.…

Q: Which types of cells are easier to replace, and thus can be found in places like our mouth and outer…

A: Cells that make the lining of the body are easier to replace. They are found in places such as the…

Q: Scientists often say “correlation does not equate to causation”. What do you/we/they mean?

A: Q.Scientists often say “correlation does not equate to causation”. What do you/we/they mean?

Q: What is the difference between single-channel and multichannel micropipettes?

A: A pipette is a glass or plastic tube-like instrument used in the laboratory to transfer liquid. They…

Q: What are the essential characteristics of science?

A: Introduction: The physical world and its phenomena are included in the systematised body of…

Q: Answer in point. Should be correct. Else

A: INTRODUCTION Screening techniques It included Blue white assay, Agarose gel electrophoresis, replica…

Q: Which of the following best describes an observation/experiment from a model organism that has…

A: Model organisms are organisms that can be used as simple reference to study about various organisms.…

Q: Provide an explanation for the cooling effect of sweat in humans and pantin in dogs.

A: Thermoregulation is the ability of an organism to maintain a core body temperature.

Q: ept Map: Organic Molecules monosaccharides lipids proteins glycerol and fatty acids nucleic acids…

A: That serves as primary source of cellular fuel called carbohydrates, that are composed of linked…

Q: Design a cross that would allow you to distinguish between two plants showing a dominant phenotype…

A: T dominant allele for tall plant t recessive allele for short plant        T T             ×…

Q: What are the differences between Adverse effects or side effects ? Generally , the terms are used…

A: In the field of medicine, two terms that are frequently used are side effect and adverse effect.…

Q: What can muscle tissue do that nervous tissues can’t

A: Introduction Cells are the basic structural and functional unit of all biological organisms. These…

Q: Which of the following sequences represents the hierarchy of biological organization from the most…

A: Biological hierarchy refers to the systemic organisation of organisms into each levels, such as the…

Q: Please help me make an indented dichotomous key. I WANT COMPLETE ANSWERS PLEASE I DON'T WANT THE…

A: The dichotomous key are the set of choices that are provided so as to make the user understand the…

Q: With the same directions

A: Sterilization  The process of getting germ free objects, surface, or fluid.

Q: 3. Are animal cells and plant cells eukaryotic or prokaryotic? Why do you say so? 4. What structures…

A: In environment different forms of organisms are found from simple unicellular to complex…

Q: Discuss how the biogeochemical cycle and the cycle of nutrient elements essential to life's…

A: Biogeochemical cycles mainly refer to the movement of nutrients and other elements between biotic…

Q: 6. Compare the size and shape of plant and animal cells. 7. Compare the size of plant and animal…

A: Answer 6 : the difference betweeen plant and animal cells are :  1) plant cell have a specific shape…

Q: Flaming the mouth or lid of culture tubes or plates after opening and before closing them. 2.…

A: Culture medium is a media which permits growth of microorganisms.  Culture medium is divided into…

Q: Organelles

A: Cell and its organelles: Cells are defined as the membrane-bound groups of organelles which work…

Q: Which has the highest level of organization (i.e., is the most complex and includes the others)?…

A: Q. Which has the highest level of organization (i.e., is the most complex and includes the others)?…

Q: Review darwin's theory of natural selection. Write a 1-2 paragraph reflection explaining a) what you…

A: Charles Darwin developed the evolutionary hypothesis that altered how people view humanity. Despite…

Q: What historical antecedents gave rise to the inventions of DNA, INTERNET AND ANTIBIOTICS?

A: Introduction: History has set the path for today's sophisticated and advanced scientific and…

Q: please answer every question based on the attached picture of the frog testis1. what cell is being…

A: When the frogs are two months old Then putative testis can be seen as a little oval object.Testis…

Q: What are the common causes of and clinical findings in functional and mechanical bowel obstructions?

A: Small bowel obstructions fall into two categories: functional — no physical blockage, but bowels…

Q: 4. Draw the cross section of ciliated pseudostratified columnar epithelial tissue at 400x total…

A: Ciliated Pseudostratified columnar epithelium is made up of single layer of  cells, which is present…

Q: QUESTION : — explain the main event occuring during trafficking and sorting of protein through the…

A: The Golgi apparatus, also known as the Golgi complex, serves as a factory where proteins from the ER…

Q: Where would you level of Muscle Want higher / finer Control?

A: Muscle Contraction can be described as a process in which tension is generated within muscle cells.…

Q: Wild type, rapid-cycling accessions of Arabidopsis, such as the Columbia (COL) lab line will flower…

A: Arabidopsis (rockcress) is a member of family in the Brassicaceae family. They are flowering plants…

Q: come up with two illustrations of objects that exhibit patterns in nature and write a brief

A: Introduction: Natural visual patterns abound in the universe, from the spirals on a fiddlehead fern…

Q: What is the importance of using multiple purification methods in isolating a protein?

A: Introduction  Proteins are substantial biomolecules and macromolecules made up of one or more…

Q: 5. In logistic growth, where is competition for resources highest? 6. Are there any wild populations…

A: Ans-1 Logistic population growth curve is S-shaped. In this curve, the population grows…

Q: You are given a protein solution with a concentration of 0.15 mg/ml. We need 10 μg for an…

A: The high concentration solutions used for dilution are called stock solutions. A stock many contain…

Q: Complete the table below. For each organelle, indicate whether it is found in an animal cell, a…

A: Cell is the basic structural and functional unit of life. It has various organelles that perform…

Q: Explain the difference between loose and dense connective tissues.

A: Animals have a variety of organ systems throughout their bodies. Organs that are two or more in…

Q: Effective hearing requires the use of three essential organs.

A: Hearing is performed by one of the sense organs. Actually we hear the sound, which is a sort of…

Q: Problem B. DNA: Codon Segmenting The way that DNA is often interpreted as genes is in groups of…

A: An open reading frame (ORF) is the segment of DNA (deoxyribonucleic acid) sequence that can be…

Q: 17. In the last 8 weeks of gestation, extramedullary hematopoiesis is most likely to occur in which…

A: Introduction  The haematopoiesis is the process of formation of components of blood in the bone…

Q: In peas, seeds can be round (R) or wrinkled (r) and either yellow (Y) or green (y) Stem length may…

A: The monohybrid cross is the cross between the two organisms which have one contrasting trait…

Q: Fill in the blank. The style is No answer text provided. O Diploid O Haploid

A: Answer :                First option is right - No answer text provided .   Style -  This is the…

Q: come up with two illustrations of objects that exhibit patterns in nature and write a brief…

A: Introduction The word pattern refers to a consistent design or arrangement. The pattern in nature…

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.