In dogs, there is a hereditary deafness caused by a recessive allele, d. A kennel owner has a male dog that she wants to use for breeding purposes if possible. The dog can hear, but the owner is unsure of the genotype. She does a testcross (crosses it to a homozygous recessive dog), and two of the five offspring are deaf. This means that the male dog A.has the genotype DD B.has the genotype Dd C.is still of unknown genotype since there were offspring of both deaf and hearing phenotypes. D.has the genotype dd

Q: Interference competition is when competitors а. interact through a shared predator or parasite b. in...

A: Introduction: When two species compete for the same resource,  and one of the organisms denies its c...

Q: 12. The secretion of follicle stimulating hormone (FSH) & luteinizing hormone i stimulated by which ...

A: FSH is made by your pituitary gland, a small gland located underneath the brain. FSH plays an import...

Q: Design a detailed experiment that would support the hypothesis that plants engineered to contain gen...

A: When a gene from one organism is transferred to improve or induce desired change in another organism...

Q: Mammalian cells have a limitless replicative potential. During carcinogenesis, the cancer cell is no...

A: 1. False, mammalian cells can divide only up to certain limit.  2. False, in initial stages and some...

Q: What are neurotransmitters?

A: The nervous system is the major controlling, regulating, and conveying or communicating system in th...

Q: Some of the same G protein–linked receptors and signal transduction pathways found in plants and ani...

A: G-proteins come under the category of membrane proteins that can show linkage with the GTP in order ...

Q: Distiguish between 'exotoxin and endotoxin.

A: Endotoxins are less toxic compared to exotoxins. 

Q: Which of the following correctly describes how positive and negative feedback are different? Negati...

A: A. Negative feedback reverses changes in a system, while positive feedback amplifies changes in a sy...

Q: Briefly explain the contribution that each of the following people made to the study of genetics. a....

A: Matthias Schleiden and Theodor Schwann cofounded the cell theory. He concluded that all plant tissue...

Q: Based on the Figure a) Draw and label the oral surface of the brittle star b) What are the character...

A: Brittle star have regeneration power in their arm that is why they named brittle star . They drop th...

Q: What are the three compartments of cells found in the bone marrow.

A: Given: Blood is a fluid connective tissue.Blood consists of a fluid medium called plasma in which th...

Q: You are to discover the chromosomal location (autosomal or X linked) and mode of inheritance for two...

A: The above scenario based on Mendelian inheritance. Your answer is attached below.

Q: what would be the polar bears instantaneous rate of increase (dN/dt) if the Polar bears are reproduc...

A: Here, N represent Population density at any time t. And K represent carrying capacity of the habitat...

Q: Cite evidence supporting a long evolutionary history for cell signaling molecules.

A: Cell signalling is defined as a cell's ability to recognise information from the extracellular envir...

Q: Can you explain Metacentric, Submetacentric, Acrocentric and Telocentric

A: During cell division, the centromere serves as a connection between two sister chromatids. The siste...

Q: At what age do they start to appear in the bone marrow

A: Introduction: Bone marrow:Bone marrow is a semi-solid tissue found in the spongy or cancellous parts...

Q: Is cordera warmer colder or the same temperature as hillsdale?

A: Answer 

Q: How is paracrine regulation similar to endocrine regulation? How does it differ?

A: Hormones are the chemical messengers that exert effects on the target cells.

Q: Oparin-Haldane hypothesis

A: Answer: 

Q: Identify the part in a flowering plant and write whether it is haploid (n) or diploid (2n). Ovary

A: Flowering plants Highly modified shoot meant for sexual reproduction in plants.      

Q: 9. For the following aspartate reaction in the presence of inhibitor, Km = 0.00065 M. Determine Vmax...

A: Introduction: Competitive Inhibitors: The subastances which compete with the natural substrate or co...

Q: What is the importance of dialysis in the absorption of food particles through the intestinal wall?

A: Intestine  A long cylindrical pine in our gut which help in the absorption of different kind of mole...

Q: The genes S and T show complete linkage. If a heterozygous individual (whose parents were SSTT x sst...

A: As per the given information: Genotype of parents are SSTT × sstt Genotype of individual is  SsTt  s...

Q: What’s a stomach?

A: Most of the organisms which digest food contain stomachs but many organisms that lack stomachs also ...

Q: Using the Dihybrid Cross, Give the Total Number and Types of Gametes formed.    1. AaBbCCDd  2. M...

A: Genotype is considered a genetic combination of traits in an organism. Mandel's law of inheritance i...

Q: Homeostasis has been characterized by all living organisms, which is essential for survival. Which o...

A: When an object consists of cells, responds to the environment, grows and develops, produces offsprin...

Q: Electrochemical gradients (a) power simple diffusion (b) are established by pinocytosis (c) are nece...

A: Simple diffusion is the passive movement of substances.

Q: Distiguish between 'exotoxin and endotoxin.

A: Toxins are harmful , noxious substance produced by the microbes like Bacteria that are sufficient  t...

Q: you have found a recessive mutant fruit fly with no antennae. You interbreed this fly with its offsp...

A: The correct answer is- a) only one gene controls antennae development, and the parents of your cross...

Q: What are the three types of DNA ends that can be generated after cutting DNA with restriction enzyme...

A: A restriction enzyme, also known as a restriction endonuclease, is a bacterial protein that cleaves ...

Q: All of the following are important functions of the innate system EXCEPT that a. Promotes early defe...

A: Immunity :- It is the tendency of our body to fight against foreign microbes . The system of our bod...

Q: Explain the significance of opsonization.

A: Optimization is the process by which our body target pathogens by opsonin proteins like C3b . These ...

Q: Southern and Northern blotting are powerful molecular biological tools based on hybridization of nuc...

A: There are basically 4 types of blotting: Southern blotting. Western blotting. Northern blotting. E...

Q: Rank the following energy sources from highest to lowest carbon intensity. (1 being the highest, 4 b...

A: The increased usage of non renewable energy sources has led to the widespread air pollution and envi...

Q: The nervous system, the major anatomical and functional subdivisions.

A: The human body is a very complex creature made up of several systems. Each system in the human body ...

Q: 73. which of the following atoms or groups are not found in an amino acid? carboxyl groups (-COOH) ...

A: 73/ Option 3 i.e. NH2 group  

Q: Iodine in Ziehl Neelson’s staining serve as the mordant. True or false underline the word that is fa...

A: Answer 

Q: 35. Regarding the adrenal gland, which of the following are incorrectly paired? Mineralocorticoids s...

A: Answer :  A)  mineral corticoid such as vasopressin are produces in the zona glomerulosa. 

Q: A child has blood group O. If the father has blood group A and mother blood group B, work out the ge...

A: Blood group IA shows blood group A. IB shows blood group B Both IA and IB are dominant over i which...

Q: Give 2 cases where phylogeny was used either for scientific advancement or to solve problems in soci...

A: Biology is the most wide branch of science, in this branch scientific study of life take place. Biol...

Q: What are the possible abnormal gametes the male can produce with non-disjunction occuring in Meiosis...

A: When nondisjunction occurs at the end of meiosis I,  it will result into 4 gametes; 2, n+1 gametes a...

Q: What is the impact of in ovo and ex ovo avian embryo culture in various fields such as medicine?  E...

A: Answer :- As we know that ovo and ex ovo avian embryo culture is evacuation of the first eggshell or...

Q: Question 12 Panthers are also susceptible to a respiratory infection [feline calicivirus]. Individua...

A: Here homozygous dominant gene and heterozygous gene encoded for pathogen resistance i.e infection re...

Q: Describe the Jak/STAT signal transduction pathway

A: Answer :- JAK/STAT signalling  pathway sends signals from the extracellular flagging pathway to the ...

Q: If there isn’t such a thing as biological race, then why do certain diseases and conditions (like os...

A: Tay-Sachs disease is a hereditary disorder that affects a small number of people. It occurs when a c...

Q: 18. Which of the following is not a function of ССК? to. Secretion of gastrin by G cells b. Release ...

A: Introduction: The Digestive System in humans starts with the mouth or oral cavity, leading to the al...

Q: Why are patches in a landscape mosaic often important to people who are interested in conserving pop...

A: Dispersion of living organisms around the Earth can be used to describe the way in which a populatio...

Q: 65.what is the main function of the monosaccharide, glucose? glucose is an immediate energy source ...

A: Biological macromolecules are the substance that are needed in great amount and are metabolized to l...

Q: a) List down subclasses of Gastropoda b) Snails are distinguished by an anatomical process known as ...

A:

Q: Land-based species are more at risk of extinction than freshwater species. True False

A: Answer : False. Reason: Infact, it's actually the opposite which means freshwater species are at mor...

Communication

Communication is a method of transferring information between two persons or organisms. Communication is possible using mutually understood behaviors such as signs, symbols, or language. In the year 1980, S. F. Scudder proposed communication theory. According to his ideas, all living beings on the earth communicate, but the methods of communication differ. Communication skills are now part of soft skills.