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- About sexual reproduction: Involves one parent where a new individual develops being an exact copy of the parent also known as clone and no gamete or reproductive organ is involved O Only the mother contributes with the oocyte or egg where a new individual is formed with an exact copy of the mother's genes O Involves two parents, where each parent contributes with special germ cells or gametes that once united in fertilization, a new individual develops receiving genetic material from both parents and the product of gene recombination O Involves the father only which contributes with special germ cells or spermatozoa that once fertilized, a new individual develops receiving genetic material from the father and the product of gene recombination Next » « PreviousFertilization _____. a. unites the nuclei of a sperm and egg cell b. forms a zygote that has chromosomes of both parents c. usually occurs in an oviduct d. all of the above e. a and b but not c1. It is the creation of an offspring by fusion of haploid gametes, male sperm and female eggs, to form a diploid zygote 2. The creation of offspring without the fusion of egg and sperm 3. The development of a new individual from an unfertilized egg
- 2. Organs develop from a zygote as a direct result of the processes of 1) fertilization and meiosis 2) mitosis and differentiation 3) fertilization and differentiation 4) mitosis and meiosis1. Discuss the following terms: - asexual reproduction - nuclear membrane - reproduction - tetrad - gene - chromosome - nucleus - daughter cell - parent cell1. Which is not a characteristic of life? * O They are composed of one or more cells. O They respond to stimuli. O They respire/breathe. O They live. 2. What are 2 forms of reproduction? asexual & trisexual asexual & sexual sexual & sexual None of the above
- 1. Describe the three different types of asexual reproduction. How does Daphnia pulex case study, show a good example of how some species switch between asexual and sexual reproduction? 2. Compare and contrast gametogenesis of sperm and eggs in mammals. In your comparison, describe three similarities and three 3. Compare and contrast external versus internal fertilization. Describe at least three major differences. 4. What is meant by 'sperm competition'? What is 'second male advantage'? Describe the case study of Drosophila melanogaster in your text. 5. Describe the difference between oviparous, viviparous, and ovoviviparous. What evolutionary pressures would faxor one form over tho othor?13. The organism divides into two or more equal parts and eventually mature female reproductive organs for into a new individual. 14. It is a process where an organism reproduces without egg cell getting fertilized 15. The general term for reproductive cells. 16. An organism that has both male and reproduction. 17. The union of sex cells to produce a new individual. byWhat 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)
- 1. If a woman has a period which begins on the 1st January, when will her next period begin? 2. An egg can survive for up to 3 days after it is released (up to day 17). Sperm can survive up to 8 days inside the woman. Susie want to have a baby. She has a cycle exactly like on the diagram. On which days is she most fertile (most likely to get pregnant)?14. Female gonads that produce eggs and the female sex hormones. About 3 cm by 1cm in size 15. Thick-walled muscular organ, shaped like an upside-down pear, when fetusdevelops. Normally about 5 cm wide. 16. Opening of uterus from vagina (joins vagina at nearly right angles). 17. Muscular tube with mucus-secreting lining; receives penis during intercourse and serves as a birth canal. 18. "Fallopian tubes" Cilia-lined tubes that transport eggs from ovaries to uterus.D Question 1 Which of the following is an advantage of sexual reproduction over asexual reproduction? has a lower mutation rate passes along a higher portion of each parent's genome usually produces more offspring results in greater genetic diversity in offspring Question 2 Which of the following is the correct order of structures through which sperm pass during an ejac O urethra, epididymis, vas deferens, ejaculatory duct seminiferous tubules vas deferens epididymis urethra