2)Why are organisms that broadcast spawn useful for studying fertilization & development?

Q: Why does sexual reproduction present a special problem for burrowing or sessile animals and…

A: Parasites like tapeworms are hermaphrodites in nature i.e., male and female sexual organs in the…

Q: is in vitro fertilization a humen disease?

A: In vitro Fertilization (IVF) is a type of Assisted reproductive technology (ART). This implies…

Q: 1. Trace the pathway of spermatozoa of the male frog from the place of production up to the place of…

A: Reproduction is the production of offspring. In sexual reproduction, an organism combines the…

Q: What is delayed implantation? Why is it important in marine mammals?

A: It is a reproductive strategy used by approximately 100 different mammals in seven or eight…

Q: From what germ layers are face and mouth formed? Describe this germ layers

A: The germ layers are the embryonic group of cells that help in the development and formation of…

Q: All of the following are correct about asexual reproduction EXCEPT     a) it can create numerous…

A: Reproduction is the production of progeny by living beings.

Q: Label the chicken embryo

A: Embryo It is defined as the stage of development which is found in sexually reproducing organisms.…

Q: Wedow et al. (2018) found that genes which predispose an individual towards gay sex:     improve…

A: The reproductive system is the most essential system of the human body. Any change or dysfunction in…

Q: Which of the following steps of sea urchin fertilization initiates the formation of the…

A: Fertilization is the union of male ( spermatozoa ) and female ( ovum ) gametes which results in the…

Q: What are the evolutionary advantages for an organism to reproduce both asexually and sexually?

A: Reproduction is the process by which an organism creates more of its own progeny. Reproduction is…

Q: 1. DAY 1 (Gestational)- stage:____________ event:_________________________ 2. DAY 8 (Fertilization)-…

A: Gestational Stage is a term used during the pregnancy to describe the time period of the pregnancy.…

Q: What ethical issues are associated with the storage of embryos? Who should be making the decision…

A: After fertilization of egg with the sperm, Zygote is formed. It will develop to form Embryo, which…

Q: What are some possible functions of spicules and spongin? How are these sponge parts alike and…

A: Possible functions of spicules and spongin: Large spicules visible to the naked eye are referred to…

Q: What is an embryoscope, and how is it improving the efficiency and safety of IVF procedures?

A: The embryoscope is an IVF incubator with a built-in camera for machine-controlled time-lapse imaging…

Q: How many functional eggs (ova) result from one oogonium?     A. 1 and 3 polar bodies   B. 18…

A: In sexually reproducing organisms haploid gametes are produced. Female gametes are called eggs…

Q: What are the function of multiple ovulution embryo transfer technology?

A: Introduction  Multiple ovulation embryo transfer (MOET) is the technique for ET (Embryo transfer).…

Q: Write a short note on fertilization in Riccia ?

A: These plants are small and thalloid, meaning they lack root, stem, and leaf differentiation. The…

Q: What biological mechanisms account for the resemblance between offspring and their parents? Exmpain…

A: Introduction :  DNA stands for 'deoxyribonucleic acid' and it is the hereditary material in humans…

Q: Why are sea urchins have external fertilization? What are the adaptive advantages of external…

A: Sea urchins are significant herbivores on coral reefs, & in certain environments they assume a…

Q: How do the two kinds of mammalian reproductive cycles— estrous and menstrual differ?

A: Fertility is more tightly regulated in the female then males. Female placental mammals have one or…

Q: What is fertilisation? Give examples

A: Human beings are sexually reproducing organisms. The male reproductive system consists of pair of…

Q: Circle the letter of the correct response choose the correct answer, then write one sentence to…

A: Meiosis is the process of formation of gametes and results in the variations.

Q: What is chorionic villus sampling?

A: Inheritance refers to the transmission of genetic traits from the parent to the offspring. Genes are…

Q: Why do you think the zygote is dormant for sometime in a fertilised ovule?

A: In angiosperm, pollination is the process in which pollens are transferred from the stamen to the…

Q: Sexual reproduction ________. A) allows animals to conserve resources and reproduce only during…

A: Sexual reproduction is a beneficiary phenomenon that provides constant supply of unique organisms…

Q: Can you give me an example for the word emergence?

A: Emergence can be defined as the manifestation of collective phenomena in large systems which stems…

Q: Why are pregnant women cautioned against cleaning litter boxes?

A: Litter box A litter box, or cat box, is used for collection of urine and feces of cats as well as…

Q: What are the advantages and disadvantages of the alternation between fertilization and meiosis in…

A: The fusion of female gamete (egg cell) and male gamete (sperm) is termed as fertilization.

Q: Why is it immoral to culture headless embryos when in fact it can help to help people who need organ…

A: Murder of an individual is considered immoral. On similar terms, an embryo which is cultured to be…

Q: Fertilization made artificially in the laboratory is called ___________.a) Invitro fertilization b)…

A: When an egg of a female unites with the sperm of the male, the formation of a fertilized cell…

Q: Is the sperm or the egg are responsible for the sex of the cheaks?

A: In birds, the sex determination follows ZZ-ZW mechanism. In this mechanism, male is homogametic (ZZ)…

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

A: In ovo and ex ovo are Avian embryo culture methods. The basic characteristic of Avian embryo is that…

Q: Please describe two mistakes from the downloaded diagram on fertilization Oocyte Fertilisation

A: Fertilization is the process of sexual reproduction where two haploid gametes, female egg and male…

Q: Why does fertilization always occur in a fluid medium in nature?

A: Fertilization is defined as the union of two haploid gametes, the spermatozoa and the oocyte, herein…

Q: Why would paired external fertilization be preferable to group spawning?

A: Fertilization can be defined as the fusion of haploid gametes, egg and sperm, to form the diploid…

Q: Briefly discuss the role of hormonal system in the release of bovine eggs for in vitro fertilization

A: In vitro fertilization (IVF) is a procedure in which eggs are removed from a female's ovaries and…

Q: Which statement does NOT accurately describe somites?   series of tissue blocks   form the ribs and…

A: Embryology is the study of development and growth of fertilized egg(zygote) into mature embryo. The…

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

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

Q: In sea urchin, which step of egg and sperm recognition involves the formation of a fertilization…

A: The acrosome contains digestive enzymes. These enzymes break down the outer membrane of the ovum,…

Q: What are the advantages and disadvantages of internal fertilization over external fertilization? How…

A: Internal fertilization - It is the fusion of egg and sperm during sexual reproduction inside the…

Q: What is the proper term for the group of reproductive cells that pass genes on to the next…

A: Reproductive cells are formed through meiosis. Meiosis is reductional division.

Q: Why do sea urchins have external fertilization?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: When conducting the eggshell membrane experiment, what is vinegar used for? Multiple Choice   To…

A: Eggshell membrane experiment is an interesting reaction.

Q: Differentiate histologically the female reproductive organs of the various species: ORGAN Bitch…

A: *Bitch is the female of the canine kind as  dog and wolf and fox. * ovary of Bitch located caudal to…

Q: Why does the mode of fertilization correlate with thepresence or absence of male parental care?

A: The reproductive system is a combination of sex organs that functions in a synchronized manner in…

Q: How many egg nuclei will be obtained from 200 megaspore mother cells?

A: Introduction A megaspore mother cell, also known as a megasporocyte, is a diploid cell in plants…

Q: Which of the following statements regarding the formation of human twins is INCORRECT? a. Nearly…

A: Twins can either be monozygotic or dizygotic and hence identical or not. They may share identical…

Q: How does internal fertilization facilitate life on land?

A: Internal fertilization occurs inside the body of a female individual. Mostly internal fertilization…

Q: Why males, in most of the species, provide no paternal care?

A: Reproduction is the most important life function that is prevalent throughout all organisms. It can…

Virus

Viruses are infectious microscopic agents that can only reproduce in live cells of animals, plants, or microbes and are smaller than bacteria. Vertebrates, invertebrates, plants, protists, and fungi are among their many hosts. Viruses are unable to multiply on their own due to the lack of necessary cellular machinery, but they can guide the cell machinery of a host to make additional viruses by infection. The virus enters and attaches to a particular host cell, injects its genetic material, and reproduces by using the host’s genetic material. Viruses cause infection by taking entry into the host cell and using the host cell’s enzymes and raw materials to multiply.