The chromosome count of a cell at the beginning of prophase I is 12. What is the centromere count in a gamete belonging to the same organism?   A. 48   B. 24   C. 6   D. 12   E. None of the answers are correct

Q: 27. Which of the graphs above shows that one extreme phenotype is favored, possessing a higher…

A: Natural selection is a theory that states that organisms evolved by changing their heritable traits…

Q: C) How might sexual selection lead to exaggerated morphology or behavior? (D) and how might natural…

A: Introduction Sexual selection is a type of natural selection seen in sexually reproducing organisms…

Q: 38. All blood cells are produced in the A. red bone marrow. B. yellow bone marrow. C. white bone…

A: Introduction  In humans and many animals, Blood is a fluid connective tissue. The heart pumps blood…

Q: 8. Clonal Selection Hypothesis is the most accepted theory for how immune cells respond to specific…

A: The clonal selection theory was presented by Frank Burnet in 1957. This theory explains how…

Q: Evidence of Evolution 31. A biologist analyzes the DNA sequences in three different primates. The…

A: Species diversity is a measure of biological variety seen in a certain ecological community,…

Q: 38. According to the data shown in the table above, which of the following organisms is most closely…

A: Ans: Domestic Chicken

Q: An individual heterozygous for 3 genes, Aa Bb Cc are test-crossed to aa bb cc and 1000 progenies are…

A: Note: There is an error, Abc - 145 instead it should be, ABC - 145. Given: An individual…

Q: When activated extracellularly, G protein-coupled receptors (GPCRs) initiate which of the following?…

A: GPCRs are a large family of cell surface receptors that respond to a variety of external signals.

Q: The simplest mobile elements in bacteria are called ___________________. A. insertion sequences B.…

A: Introduction  A plasmid is a short extrachromosomal DNA molecule that can replicate independently of…

Q: Mitochondrial Oxidative phosphorylation is demand driven   Group of answer choices True False

A: Oxidative phosphorylation is the process where ADP is phosphorylated to form ATP. ATP is the energy…

Q: Which of the neuroglial cell types shown form myelin sheaths within the CNS? OA Ов Ос F

A: Neuroglial cells Neuroglia or glia or glial cells are non-neuronal cells present in brain and spinal…

Q: The following terms are presented in this particular unit and these can affect the vital signs of…

A: A healthy person follows a regular diet, exercise program, and daily routine. If a person is…

Q: RNA hydroloysis under alkaline conditions involves the intramolecular displacement. 2¹ hydroxyl…

A: Introduction RNA or Ribonucleic acid is a complex compound that is polymeric and helps in the…

Q: 49. The "killer" yeast phenotype is caused by A. tyramine production B. production of fusel alcohols…

A: INTRODUCTION Killer yeast They are yeast like Saccharomyces cerevisiae that can produce toxic…

Q: This is a linear biochemical pathway

A: Biochemical pathways is a step by step series of interconnected biochemical reactions in which each…

Q: 36. Which of the following relies on the study of embryos as evidence of evolution? A. Comparative…

A: Which of the following relies on the studies of embryo as evidence of evolution?

Q: Gene expression refers to the molecular structure of DNA. the process by which protein manufactures…

A: A gene is the basic physical and functional unit of heredity. Genes are made up of DNA.

Q: True/False   True or False? Transposon mutagenesis is useful for identifying essential genes in a…

A: A DNA sequence defines a transposon, which is a collection of mobile genetic elements. Transposons…

Q: (A) Monogamy is rare in mammals. Why?

A: Monogamy is defined as a mating system or committing to a sexual relationship with only one partner.…

Q: 1. Explain the biosynthesis of caffeine.

A: Caffeine is a compound that works as a  stimulant and is found naturally in the plants of tea,…

Q: How does natural selection change allele frequencies in populations? A. Natural selection controls…

A: Natural selection is one process of evolution. According to this process, some traits are naturally…

Q: 11. A) Why do we generally see animals with eggs and sperm for gametes (i.e., why do we have two…

A: Evolutionary Stable Strategy ESS is a strategy adopted by a population to adapt to specific…

Q: Which of the following best describes saltatory conduction? A process in myelinated axons where the…

A: In contrast to the slow continuous process of depression extending down an unmyelinated axon,…

Q: Which of the following are the likely explanations for the failure of a postsynaptic neuron to…

A: The postsynaptic element is often the soma or dendrite of a postsynaptic neuron. The other side of…

Q: True or False? While transposons need to move to reproduce and to distribute to new hosts, the…

A: answer 1 A cut-and-paste process allows DNA transposons to transfer from one genomic region to…

Q: 11. During his voyage aboard the HMS Beagle, Darwin noticed that the finches found on the different…

A: Introduction  Natural selection is the adaptation and modification of populations of living…

Q: (1) List the following histological findings of atherosclerotic disease in order from least severe…

A: Introduction : Atherosclerosis is the narrowing of arteries due to plaque formation. The blood…

Q: Q5) A person with severe myopia has a far point (a). (20cm) What is the strength of the lenses The…

A: Myopia (nearsightedness) - is a vision condition in which objects close to you are clearly visible…

Q: Define the following indices: FEV1-PEF-FVC. Give the units in which they are normally expressed

A: FEV1 is the amount of air you can force from your lungs in one second. It's measured during a…

Q: an Gram negative organisms.

A: M, Eosin Methylene Blue (EMB) agar is a differential microbiological medium, which slightly inhibits…

Q: 3. Which of the following shows the correct hierarchy of classification from the most inclusive to…

A: 3. a) domain , kingdom, phylum, class, order, family, genus , species.      4. Only same…

Q: 7. TRUE OR FALSE (explain your answers) s) Selenite cystine broth and tetrathionate broth allow the…

A: 7. True or false s) Selenite cysteine broth and tetrathionate broth allow the repair of injured…

Q: 1. According to Darwin's theory of evolution by natural selection, individuals within a population…

A: The theory of evolution combines these hints into a coherent account of the diversity of living…

Q: Which of the following statements are correct? The inferior vena cava returns oxygenated blood from…

A: Heart is a muscular organ which pumps blood through the network of arteries and veins. Arteries…

Q: You stimulate a presynaptic neuron to create an action potential. Then, you record what happens to…

A: Normally a cell or a neuron remains in a polarised state that is its interior is negatively charged…

Q: 16. How many mass extinctions has the Earth had so far? A. 1 B. 2 C. 5 D. 10 I am finis

A: Answers :  The total mass extinction on earth till now is  Option :  C                   5

Q: pharmacy conversions 20. three and one-half fluid drams= fl3 22. one thousand units 22. one thousand…

A: Answer :- 20) 3 and 1/2 fluid drams Fluid dram= 5  3×1/2=7/2 fluid drams = 35/2 ml = 17.5 ml 3 and…

Q: how specimens are marked for orientation?

A: Specimen orientation Specimen orientation is a way of arranging the specimen (head and neck) in a…

Q: 2. Which of the following are factors in determinin the stability of a community? Select all correct…

A: An ecosystem is any geographic area in which plants and animals interact with their environment and…

Q: Describe the step of protein synthesis.

A: Introduction: A protein is an exceedingly complex natural molecule made up of amino acid residues…

Q: 8) A common treat for people who have overactive bladder is the prescription of cholinergic…

A: Benefits of vesicare : Vesicare is an oral medication and also comes as cream. It helps to cure an…

Q: Question 1: How does recombination between linked genes occurs?   a. Independent assortment…

A: Recombination between linked genes takes place during meiosis, when homologous chromosomes line up…

Q: Define the meaning of nosocomial infection and explain three potential exogenous sources

A: Nosocomial infections are also termed as hostipal-acquired infections. These are those infections…

Q: Define the term DNA.

A: Gregor Mendel: Father of genetics Genetic material are the substance which are responsible for the…

Q: A) Explain what is meant by group selection. (B) How is kin selection different from group…

A: A) Explain what is meant by group selection. (B) How is kin selection different from group…

Q: Describe the genetic makeup of a plasmid in an F’ cell, including the types and origins of genetic…

A: Plasmids are DNA molecules that exist outside of the chromosomes. They are microscopic, round, and…

Q: Match the polymer to its monomers. protein polysaccharide enzyme starch deoxyribonucleic acid…

A: Biomolecules occurs naturally in living organisms. All forms of life have biomolecules as their…

Q: When you interlace your fingers, your left thumb falls over your right thumb. So you have the…

A: In dominant-recessive conditions, the dominant phenotype masks the recessive phenotype, hence the…

Q: During DNA replication, one of the new strands of DNA is synthesized continuously, while the other…

A: Introduction :- Each of the two parental DNA strands acts as a template for new DNA to be generated…

Q: V. Dr. Smith is incensed by the review and believes it came from a biased competitor. He clarifies…

A: Question 1 has no connection with the abstract provided. Please check it relevance and then post it…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: