Q: Give two reasons for the appearance of variations among the off springs formed by sexual…
A: Sexually reproducing organisms give rise to unique progenies that contain genes from both the…
Q: Summarize evidence that the yup locus acts as a prezygoticbarrier to reproduction in two species of…
A: Species include a group of individuals that can interbreed among themselves but are reproductively…
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A: Evolution is a process of gradual changes in the genetic composition of an organism based on the…
Q: How do different types of energy investment by females contribute to the reproductive success of a…
A: Fertilization is also known as syngamy. It can be defined as the fusion of the gametes which gives…
Q: scribe the differences in the anatomy and physiology of the male reproductive system in the ving…
A: The male reproductive system is the system in the male body that produces fertile male gametes,…
Q: different phases and stages of the estrous cycle
A: The estrous cycle has four stages in particular proestrus, estrus, metestrus and diestrus and goes…
Q: Describe the difference between semelparity and iteroparity— two different reproductive strategies.
A: Life history of a species refers the pattern of survival and reproduction events typically for a…
Q: Define about Maternal care in mice. ?
A: Maternal care can be defined as the mothers' behavior to take care of their newborn babies. In mice,…
Q: What advantage do organisims that reproduce sexually have over other oranisms that reproduce…
A: The biological mechanism by which new individual organisms – "offspring" – are created from their…
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A: INTRODUCTION In the inner cell mass the bilaminar embryonic disc may formed two layers of…
Q: Contrast the biological advantages of hermaphroditism that involves cross-fertilization with…
A: Hermaphroditism is referred to as intersex which is a condition in which there is a discrepancy…
Q: Provide the modes of reproduction present in plants and animals
A: Depending on the number of parents involved, there are different modes of reproduction. Every living…
Q: how does the asexually produced individuals move across the landscape?
A: The process by which a new individual is generated from the parents is known as reproduction. Sexual…
Q: Unchanging environments are advantageous to organismsa. that reproduce asexually.b. that undergo…
A: Asexual reproduction is the type of reproduction where there is no fusion of male and female gametes…
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: Based on this study of Aurelia aurita, how could you define the concept of lifecycle?
A: Aurelia aurita is a species of Aurelia genus that is widely studied. The genus contains closely…
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Q: Mate the F1 generation with each other to produce F2 offspring.
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Q: Explain the process of estrus synchronization.
A: Reproduction is the process that involves fusion of the male and female gametes in order to produce…
Q: briefly describe one benefit an organism that uses asexual reproduction
A: Introduction Asexual reproduction is a type of reproduction in which a single parent produces a new…
Q: What are some of the drawbacks to GE organisms?
A: Genetically engineered organisms whose genomes have been genetically engineered in a lab to…
Q: What are some of the applications of animal reproduction and development in the real world?
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A: Animal behaviour is the research of how animals navigate around in their surroundings, engage…
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: what is health equity and how did the health of people change in canda during covid 19 pandamic?
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A: Deoxyribonucleic acid, or DNA, is a molecule that holds the information that allows an organism to…
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A: Haplodiploidy is a sex determination in which males develop from unfertilized eggs (n) called…
Q: Examine any two features of the dynamic life cycle models of fertility.
A: Dynamic life cycle fertility models tells about the evolution of fertility variates over the life…
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: Describe how genes are transmitted in sexually reproducingspecies
A: Sexually reproducing species are the species that perform sexual reproduction which involves a…
Q: What is Brood parasitism? Give an example. What adaptation has evolved in this phenomenon?
A: Parasitism is a type of symbiotic relationship when one organism benefits by harming the other…
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: Provide some examples of asexual and sexual reproduction. Suggest why the organisms you have chosen…
A: Reproduction is the process of formation of organisms of their own kind with involvement of either…
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: Why are offspring of oviparous animals at a greater risk as compared to offspring of viviparous…
A: Oviparous animals are those which lay eggs. Viviparous animals are those which give birth to young…
Q: Differentiate semelparity and iteroparity. Give 2 examples of organisms you have encountered…
A: Reproduction is the most important fundamental process by which organisms produces their offsprings.…
Q: what are the pros and cons of reproductive technologies? Explain them.
A: Reproductive technologies include the use of technology for handling of eggs and in some cases…
Q: Compare and contrast the mechanisms of dosage compensation in different animal species.
A: Chromosomes are the thread-like structures that carry genes on them.
Q: Briefly "Infanticide is a sexually male reproductive strategy"- Explain.
A: Infanticide is the deliberate death of babies or offspring (or infant homicide). Infanticide has…
Q: often relinquishing the young ones owing to food shortage is one of the common behaviours exhibited…
A: Mice often encounter shortage of food and they have various coping mechanisms to combat this.…
Q: List three main factors which any incubator has to provide for simulating an artificial womb?
A: Mastering of in vitro fertilisation (IVF) and advancements in premature baby survivability have…
Q: Describe the advantages of estrus synchronization.
A: Estrous is the heat period that is produced as a cycle in the animals except humans. The cycle…
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…
Propose several mechanisms by which animals
may synchronize the production of offspring with favorable
environmental conditions.
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- Describe an example of each of the following: a pre-zygotic barrier to reproduction a post-zygotic barrier to reproductionWhat is the state of traditional herbal medicine in the Philippines with regards to reasearch and development?What is true of the Progress Zone model? a) the length of time a cell resides in the progress zone dictates its identity along the proximodistal axis b) it is consistent with the outcome of removing the AER at successively later stages of limb development c) once a cell leaves the progress zone, its identity is established along the proximodistal axis d) cells of the progress zone are stimulated to divide by the AER e) all of the above You isolate a new mutant chicken strain in which limb outgrowth is severely curtailed. Limbdevelopment begins and the AER initially forms, but the AER then degenerates and subsequent development of the limb is aborted. Which of the following is a possible explanation for the AER phenotype? a) the mutant gene may function cell autonomously in the AER b) the mutant gene may function cell-nonautonomously in the limb bud mesenchyme c) the mutant gene may interfere with the feedback loop between the mesenchyme and AER d) all of the above
- Data:Total Births: 2,700 Low Birth Weight: 264Mothers with inter-gestational interval < 12 months: 92Mothers with low birth weight with inter-gestational interval < 12 months: 21Mothers with previous HTN: 18Mothers with low birth weight with previous HT: 15 A) Global or absolute risk of low birth weight.B) Relative risk for the factor "inter-gestational interval < 12 months". According to the results obtained, give your opinion as to whether there is an association or not and express it accordingly.C) Relative risk for the factor "mothers with previous HTN". According to the results obtained, give your opinion as to whether or not there is an association and express it accordingly.D) In the case of the factors in which you consider, according to the results obtained, that there is an association, calculate the Attributable Risk (AR) and the Etiological Risk Fraction (ERF), expressing in both cases their significance.Reproductive modes can be defined based on energetic provisioning (lechithotrophy vs. matritrophy) or birth style (ovipary vs. vivipary). Reproductive modes related to birth style mostly fall into clear categories of energetic provisioning. Define the above four reproductive modes based on energetics and style that make them distinct. Be sure to mention WHEN the relevant events related to each occur. Finally, explain why the birth style of ovovivipary less clearly falls into any one of these categories...Name four reproductive barriers and indicate whethereach is pre- or post-zygotic.
- Briefly discuss the role of hormonal system in the release of bovine eggs for in vitro fertilizationWhat are advantages of asexual reproduction? Select all that apply. A) In a stable environment, a population that develops from asexual reproduction can grow quickly and thrive. B) In an unstable environment, a population that develops from asexual reproduction can grow quickly and thrive. C) Species that reproduce through asexual reproduction have more genetic diversity. D) Organisms in isolated areas can still reproduce through asexual reproduction.2)Why are organisms that broadcast spawn useful for studying fertilization & development? a)Fertilization does not require multiple gametes b)Fertilization occurs outside the bodies of the parents, so it can be directly observed c)Fertilization is observable because the eggs are large enough to see d)Fertilization occurs without the need for parents
- Draw a rough schematic of the placental interface for both invasive (human) and non-invasive (sheep) species.The gray mouse lemur (Microcebus murinus) is a species in which females come into estrus and mate with several males on one night each year. Females accept any and all partners, but a genetic analysis of offspring indicated a greater difference in the MHC genes of mothers and actual fathers than in mothers and males selected at random from the population (Schwensow et al. 2008). Use these results to evaluate the various hypotheses on the indirect genetic benefits of polyandry. What do they suggest about the mechanism that enables a sexually promiscuous female mammal to exercise mate choice? Don't write from any online source..Based on this study of Aurelia aurita, how could you define the concept of lifecycle?