Stepwise ommatidial development begins with the differentiation of photoreceptors. ______ is the first and ______ is the last photoreceptor differentiated. Differentiated photoreceptors recruit surrounding cells to become ______, which together with the photoreceptor cells recruit additional accessary cells of the ommatidia including ______ and _________. R1, R8, pigment cells, cone cells, bristle complexes R8, R1, pigment cells, cone cells, bristle complexes R8 R1 cone cells, pigment cells, bristle complexes R8, R7 cone cells, pigment cells, bristle complexes R8, R1 bristle complexes pigment cells, cone cells

Q: Given the pedigree for the trait A (with alleles A and a following mendelian genetics) below: What…

A: The transmission of characters/ traits from parents to their progeny is termed as heredity and the…

Q: Question 4 Sodium channels at the trigger zone initiate action potentials by a feedback negative…

A: INTRODUCTION The voltage gated sodium channels present throughout the body. It conduct sodium ions…

Q: Question 59 Neuromodulators modify nerve signals by changing the number of receptors and the…

A: Introduction:- Slow-acting metabotropic receptors inside or outside the synapse of "thousands" of…

Q: 375 million years ago, the population of organisms we call Tiktaalik had variation in many aspects…

A: Tiktaalik roseae  is a 375 million year old fossil fish which was discovered in the Canadian Arctic…

Q: Compare the aspect of rumen, reticulum, omasum and abomasum tissues. How can you differentiate them?

A: Introduction :- The rumen (located on the animal's left side) is the largest stomach compartment,…

Q: In Saccharomyces cerevisiae (yeast), what is the term for the production of asexual cells? (a)…

A: Viruses are infectious microorganism made up of a genomic segment, either DNA or RNA, encased in a…

Q: of fatty acids in the body is INCORRECT? Answers A-E A. Fatty acids are excellent fuels for skeletal…

A: A fatty acid is a saturated or unsaturated carboxylic group chain  formed when food is broken down…

Q: Which of the following proteins can be used in optogenetic system? O A. OptoXR, an engineered…

A:

Q: Having an E. histolytica infection. Fecal examination reveals the presence of blood in the stool,…

A: Introduction : Amoebiasis pathogenesis is thought to be a multistep, multifactory…

Q: This depolarizes the cell membrane:     inflow of chloride     inflow of sodium     outflow of…

A: Depolarisation  In biology, depolarisation is the phenomenon where membrane electric volts in become…

Q: Which technique did Charles Darwin use to measure the age of the Earth?   A. rate of erosion of…

A: Charles Darwin has a major contribution to the study of evolution. He gave the concept of "natural…

Q: how do marine science study organisms

A: INTRODUCTION Marine ecosystem is aquatic environment contain high contents of salt. Marine biologist…

Q: Specifically in a control group, the variable that is not changed is the blank variable? this is a…

A: Control group  When designing an experiment, treatments are provided to the experimental units. In a…

Q: Activity 1.4: Essay.Direction: Explain your answer.Today, it is easy to make transgenic plants and…

A: Transgenic plants or animals is a genetically modified organism (GMO)  whose DNA has been altered…

Q: 1. The electrophoresis gel below shows allozyme polymorphisms of the sevenless gene (Sev) from 16…

A: Electrophoresis is classified as a technique that is used widely in different laboratories. This…

Q: Look at the Animal Tree. The green outlined rectangular area shows a lumping of extant species that…

A: Humans are different from other animals in phylogeny in many characteristics such as bipedalism, the…

Q: The following table shows the number and species of target organisms and by-catch caught by the two…

A: The activity including catching the target organisms also captures some nontarget organisms.

Q: How does a cell know exactly whereit is in a multicellular organism? Howdoes it know that its…

A: A tissue is formed by a group of cells. A group of tissues forms an organ, and a group of organs…

Q: Step 1 - Below is a basic phylogenetic tree for how canids evolved. For a group to divide into two…

A: Introduction The process of natural selection is used to change the characteristics of a species…

Q: Identifies genes that are in regions of less condensed chromatin Identifies actively transcribed…

A: DNAase I is an enzyme that cleaves DNA in the extracellular space down to an average of…

Q: explain the patient symptom? For answer. a) name the hormones synthesized in the hypothalamus and…

A: We are allowed to do one question only please repost the undone question again  Thank you for…

Q: Use the dichotomous key for this question. You have determined your unknown organism to be…

A: Biochemical tests are done to identify particular microbes in a pool of microbes.

Q: What could you deduce from the characteristics of your child? Is the genetics of variation as simple…

A: Variations are the differences in the genetic makeup or phenotype of various organisms.

Q: When an organism shifts from a quadriped to a biped, over time what happens to the spine?

A: Quadriped are the animal which have four feet. four-footed, quadrupedal. Biped are the animal who…

Q: evaluate the benefits and dilemmas in the use of human twin studies to investigate the causes of…

A: A very popular way of conducting "natural experiemnts" on humans has turned out to be Twin studies.…

Q: Choose the one answer that fits best. Which of the following statements regarding the proper…

A: Micropipettes are used in the laboratory to transfer very little quantity of liquid. Parts of Micro…

Q: What type of gastrulation is depicted from the diagram below? (A) Blastopore Blastopore 4A 4D 4c 4b…

A: The type of gastrulation depicted from the diagram is: Epiboly

Q: What are the genetic changes thatallow the repurposing of existing bodyparts during evolution? For…

A: Evolution is a process that results in changes in the genetic material of a population over time. It…

Q: The figure above shows a schematic of genes and transcription control elements from phage λ. Use…

A: The figure above shows a schematic of genes and transcription control elements from phage λ. The…

Q: Drug resistance occurs: - when antibiotics are used incorrectly - against antibiotics and not…

A: Antibiotics are the drugs that are used to inhibit the growth of microbes or kill them.

Q: An excitatory adrenergic synapse is associated with_____ acetylcholine norepinephrine GABA dopamine…

A: An excitatory adrenergic synapse is associated with norepinephrine

Q: CENTRAL DOGMA REVIEW REPLICATION Use the DNA code provided and fill in the complementary DNA strand.…

A: Introduction Replication: Replication of DNA may be defined as the process of the formation of a DNA…

Q: Outline the steps used to determine whether two genes are linked (including Chi-square tes

A: Introduction:- Genetic linkage is one of the most important properties of genes that are found close…

Q: How do cells respond to tinygradients of molecules in theirenvironment, as required for knowingtheir…

A: A multitude of communication and actions depend on the gradients around the cell. The gradient of…

Q: If both mutation and drift are acting simultaneously, predict how this will influence variation in…

A: If both mutation and drift are acting simultaneously, predict how this will influence variation in…

Q: Identify the statments whether they are TRUE or FALSE  1. You can use low speed centrifuge to…

A: INTRODUCTION Centrifuge This is a device that provide centrifugal force and helps in separation of…

Q: Cytoplasmic extracts from sensitive flies, when injected to resistant strains, can cause the latter…

A: Cytoplasm also defined as the gelatinous fluid present in the cell. Cell organelles are embedded in…

Q: If restriction endonucleases are produced by bacteria within a host, why don’t these enzymes chew up…

A: Introduction A restriction enzyme, restriction endonuclease, or restrictase is an enzyme that…

Q: Which finches are best adapted for eating small seeds?

A: Darwin gave the theory of natural selection as mechanism of evolution , it is a mechanism which…

Q: n the Golgi tendon reflex we see ______________ of the muscle and in the stretch reflex we see…

A: Stretch reflex and Golgi tendon reflex Also called the myotatic reflex which occurs as a response to…

Q: A 20µL unknown protein was mixed with 80µL of water. Then, 10µL of this mixture was added with 10µL…

A: Answer :- Assuming that the standard solutions of BSA were made upto 100μL, the concentrations taken…

Q: Identify and label the different structures of the bronchioles.

A: Introduction Bronchioles:- These are air passages inside the lungs that branch off like tree limbs…

Q: The body's muscles are; attached to the bone through Cartilages and Oligaments; the system of bones…

A: Introduction The human musculoskeletal system (also known as the human locomotor system and…

Q: Organ Excretory/ Urinary System Circulatory Respiratory Immune Function System System System AS…

A: Q. Functions : a: Allows the passageway of air to the lungs    b. Pumps blood to the different parts…

Q: The Law of 10% in trophic levels states O Only 10% of the energy in a trophic level is transferred…

A: The energy flow in an ecosystem refers to the transmission of energy from one trophic level to the…

Q: This event of the EMT causes cells to change form, becoming constricted at the apical end (away from…

A: Epithelial mesenchymal transition is very important for the further process of gastrulation,…

Q: The skull protects the; brain and several of the most important sensory organs, eye and ears, and…

A: Skull and ribs protects several parts of body :-

Q: What are the importance of ashing the sample?

A: We are allowed to do only one question. Please repost the undone question again.  Thank you for…

Q: Aside from 'creationism' and 'intelligent design,' what are other pseudoscience that negates or…

A: Evolution  Evolution is the change in the species over time.

Q: 3. In humans, hemophilia is a sex linked trait. Females can be normal, carriers, or have the…

A: *DISCLAIMER FOR MULTIPLE* Since you have asked multiple question, we will solve the first question…