Q: Describe the effect of primitive streak duplication.
A: The primitive streak :- it is a structure that forms in the blastula during the early stages of…
Q: Discuss the difference between Homeotic and Hox genes?
A: Homeotic genes and Hox genes are DNA sequences found in the genome of eukaryotes. They are…
Q: How might the color change be adaptive to both aphids and the bacteria that infect them?
A: The pea aphid, Acyrthosiphon pisum is known to have a symbiotic relationship with a bacterium…
Q: What are the inheritance pattern in colour blindness?
A: Color blindness is a genetic disorder in which the person is unable to distinguish between red and…
Q: What is brachydactyly ?
A: Genetics is a piece of science stressed over the examination of genes, genetic assortment, and…
Q: What advantages are associated with bilateral symmetry?
A: Symmetry is the balanced distribution of duplicate body parts or shapes within the body of an…
Q: Draw the structure of scoliodon and pristis?
A: The Scoliodon (dogfish) and the Pristis (sawfish) are the cartilaginous fishes that belong to the…
Q: What is the difference between structural colors and colors based on pigments? How do the…
A: Colors of animals tend to be dramatic and vivid while serving as crucial marks of recognition, for…
Q: Explain in detail the external characters of Scoliodon?
A: Class Chondricthyes includes the cartilaginous fishes. The fishes bear endoskeleton made up of…
Q: Is it true that spider silk is stronger than steel?
A: Spider silk is spun by spiders. Spider silk is a protein fiber. They make webs by using their…
Q: Draw the structure of asterias and ophiura?
A: Asterias: Asterias is also known as starfish. They belong to phylum Echinodermata and class…
Q: What is meant by Rana?
A: Genus is a taxonomic unit which is a part of family and itself is composed of various species. In…
Q: Give the origin of Hyoglossus?
A: The intrinsic muscles are the four paired muscles of the tongue. The four intrinsic muscles are…
Q: Explain stink glands in the cockroaches.
A: A cockroach is an insect that is classified under the order Blattodea that also consists of…
Q: Describe Dilatation. with example?
A: Dilatation is the term commonly used in the medical profession. it has originated from the Latin…
Q: What is importance of barr body
A: Chromosomes are defined as the thread-like structures that carry genetic information. There are 23…
Q: Explain about acrocentric chromosome ?
A: Chromosomes can be defined as the thread-like structures which are situated inside the nucleus of…
Q: Are any areas of the frog zygote more darkly pigmented than other areas?
A: Yes , the animal pole is darkly pigmented.
Q: Which is the odd man out based on the third appendage? Asiomorpha, Tachypleus, Menalaides, or…
A: An appendage (or outgrowth) is an external body part, or natural prolongation, that protrudes from…
Q: What is labelled diagram of Necator americanus ?
A:
Q: Write down the role of placoid scales?
A: Placoid scale is a type of scale that encompasses the basic unit of the sharks hard skin cover. The…
Q: How are tagmata formed?
A: The phylum Arthropoda is composed of animals with jointed appendages or legs. It is a phylum of…
Q: Explain the molecular mechanism underlying the symptoms of Xerodermapigmentosum.
A: Xeroderma pigmentosum (XP) is an autosomal recessive disorder which is characterised by sensitivity…
Q: Define antherozoids?
A: Antheridium is the haploid organ that produces male gametes in fungi, algae, bryophytes, etc.
Q: Who explained increase in melanic variety of peppered moth?
A: The evolution of Peppered moth is one of the best example to understand Darwin's theory of natural…
Q: Verteberate Hox genes are arranged on the chromosome in what kind of order?
A: Vertebrates like mice also have hox genes. It is a subset of homeobox genes. Hox genes are arranged…
Q: What are poliploidy?
A: The chromosomes are thread-like structure situated inside the nucleus of plant and animal cells.…
Q: Give the role of membrana semilunaris in pigeon?
A: Doves and pigeons are diverse groups of birds. There are many muscles in pigeon and each muscle has…
Q: What is tegmina of cockroach?
A: Cockroaches are the group of insects that comes under the order Blattodea. They are the most…
Q: A В Which of the following lacks setae? C O A. ОВ. B.
A: Phylum Annelida exhibit great diversity of body forms comprising approximately 17000 species. They…
Q: Is color blindness genetically transferred?
A: Step 1 Color blindness is a common hereditary condition. It is a deficiency in which the ability to…
Q: Give a short note on the Body divisions of Rana?
A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…
Q: How/Why do people dock tails in horses? and what does the procedure entail? and what are the health…
A: Tail docking is the amputation of the tail. The reason why people dock the tail of horses is to keep…
Q: What is the characteristics of skin of a common frog (Polypedates leucomystax)?
A: Polypedates leucomystax is a medium-sized frog. It is also called tree frog, four-lined tree frog,…
Q: What does position-effect variegation (PEV) reveal?
A: Introduction Gene expression is basically controlled by various factors such as binding of…
Q: What are the types of uteri found in mammals? Describe each.
A: Introduction The degree to which the uterine horns are developed constitutes the classification of…
Q: What is astigmatism?
A: The visual sense organ is comprised of the eyes. The eyes are made up of multiple components and are…
Q: What are small differences among individuals called?
A: The study of genes is known as genetics. All individuals has their own gene which is responsible for…
Q: List the function of Pilus?
A: Many bacteria and archaea have pilus, which is a hair-like attachment on their surface. Although…
Q: Name the part that is affected in astigmatism.
A: Eye is an organ which helps us to provide vision it has several photoreceptors which receives light…
Q: Describe the structure of a clasper?
A: Claspers are anatomical structure that are present in male species of some groups of animals. It is…
Q: What are the functions performed by skin modifications in Chondrichtyes, Aves and Mammalia?
A: Skin is an important part in all living organisam. Its coming function is the protection of…
Q: What is the difference between Labeo and Scoliodon?
A: Fishes are gill bearing aquatic animals that belong to the kingdom Pisces and phylum chordates. They…
Q: Define the Different regions of secondary structure in spider silk ?
A: It is a natural fiber produced by spider's glands which is present in the backside of the stomach.…
Define about Xeroderma Pigmentosum in Humans ?
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