Concept explainers
To determine: The costs of energy associated with sexual reproduction.
Introduction: The phenomenon, called reproduction, is important for the continuous survival of species. The two different modes of reproduction are sexual reproduction and asexual reproduction. The asexual reproduction involves the production of offspring with genes inherited from a single parent. On the contrary, sexual reproduction involves the fusion of two haploid gametes to form a diploid zygote. One of the two gametes comes from the male and the other gamete comes from the female.
To discuss: The importance of sexual reproduction that outweighs those costs and accounts for the observation that most animals reproduce sexually.
Introduction: Reproduction is an important phenomenon for ensuring the survival of species. The two different modes of reproduction are sexual reproduction and asexual reproduction. Asexual reproduction involves the production of offsprings with genes inherited from a single parent. Sexual reproduction involves the fusion of two haploid gametes to form a diploid zygote.
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Chapter 51 Solutions
Biology
- example of how some species switch between asexual and sexual reproduction? Compare and contrast gametogenesis of sperm and eggs in mammals. In your comparison, describe three similarities and three Compare and contrast external versus internal fertilization. Describe at least three major differences. What is meant by 'sperm competition'? What is 'second male advantage'? Describe the case study of Drosophila melanogaster in your text. Describe the difference between oviparous, viviparous, and ovoviviparous. What evolutionary pressures would favor one form over the other? Use your text to identify all the structures in the figures below. Also provide a brief description of each structures function. male reproduction anatomy female reproductive anatomyarrow_forwardBriefly compare and contrasts the advantage of asexual and sexual reproduction. Which one is most common in animals?arrow_forwardWhat is NOT a disadvantage of internal fertilization? the ability to reproduce on land without needing external water the need for more specialized reproductive structures the production of fewer embryos the reduction in the randomness of fertilization (less genetic variability in offspring)arrow_forward
- Why is sexual reproduction useful if only half the animals can produce offspring and two separate cells must be combined to form a third?arrow_forwardquestion: based on the graph, how could you best describe the relationship between the egg size (mass) and the number of eggs? what would be a reason to observe the relationship between the two? from what I have read about, there are several factors that can influence both the size and the number of eggs. also, its not just in butterflies where you can have larger eggs but less in quantity or smaller eggs and more in quantity. I'm trying to just figure out what a good reason for the observation would be based on the grapharrow_forwardExplain two potential costs and two evolutionary benefits of Sexual Reproduction.arrow_forward
- Which factors are responsible for successful reproduction in male? Do you think the reproductive efficiency of male is declining with the passage of time? Support your point of view with examples.arrow_forwardWhy do asexual reproduction in animals reproduce faster than sexual reproduction? In which environment will reproduction be more effective, stable or predictable? Explain your answer in 3 sentences only. In which method has high rate of survival, sexual or asexual reproduction? Why?arrow_forwardEgg laying in fruit flies can be triggered (induced) when males transfer their sperm to females. Which of the following is a selective advantage of induced egg laying for the male flies? Less time and energy is expended by the male. The males do not have to produce as much sperm. More eggs can be fertilized. A male fly's sperm is more likely to be used for fertilization. Submit Request Answerarrow_forward
- A paradox of sexual reproduction is that despite its being widespread in nature, the question of why it exists at all is still unresolved. What are some disadvantages of sex? What are some consequences of sex that make it so important?arrow_forwardAsexual reproduction has all of the following advantages over sexual reproduction EXCEPT Question 1 options: No "cost of males" Can found a new population from a single individual There are no advantages to asexual reproduction Produces more offspring per reproductive event In unchanging environments, offspring are exactly as adapted as their parents to their habitatarrow_forwardAsexual reproduction passes on 100% of the parent's genes but it is relatively rare. What are the advantages of sexual vs asexual reproduction? In some cases, species are hermaphrodites to reduce the difficulty in finding mates. What is the difference between simultaneous and sequential hermaphrodites? Why is "selfing" relatively rare?arrow_forward
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