How does the sexual life cycle increase the genetic variation in a species? By allowing fertilization By decreasing mutation frequency By allowing crossing over By conserving chromosomal gene order By increasing gene stability
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- What is the basis for the tremendous genetic diversity resulting from sexual reproduction?a. independent assortment during gamete productionb. crossing-over and shuffling of linked genes during meiosisc. random fertilizationd. all of these choicesWhich of the following does not directly contributeto variation in traits among the offspring of sexualreproducers?a. Crossing over during meiosisb. The union of gametes at fertilizationc. Equal distribution of chromosomes into gametesd. Alleles on homologous chromosomese. MutationOne evolutionary advantage of sexual over asexualreproduction is that it produces .a. more offspring per individualb. more variation among offspringc. healthier offspring
- Why does asexual reproduction disadvantageous? * It takes time and energy to find a mate and reproduce. No answer Both A and B Low genetic diversity means susceptibility to diseases Fewer offspring are typically produced.Which one is NOT a prezygotic barrier to successful reproduction? (i.e. all of them are prezygotic barriers except one) reproductive/genital parts do not match appropriately chromosome mis-match so the offspring are sterile mutation in courtship rituals mutations in the timing of reproductionWhich of the following does not contribute to genetic variation in sexual life cycles? independent assortment random fertilization crossing over alternation of generations
- Which of the following are sources of genetic variation? Choose ALL that apply! Hint: Choose all that apply! mutations asexual reproduction crossing over during meiosis sexual reproductionAlthough gametes are produced via _____ in plants, genetic variationis primarily the result of _____.a. mitosis; meiosisb. meiosis; graftingc. budding; mitosisd. binary fission; asexual reproductionWhich of the following is an advantage of asexual reproduction over sexual reproduction? It requires a partner. It does not require a partner. The resulting offspring have no genetic diversity. It leads to offspring with high genetic diversity.
- In honey bees, males are developed parthenogenetically while workers are developed after sexual reproduction. The workers exhibit more similarity among themselves as compared to the queen. If the workers start giving organism parthenogenetically then the offspring would most likely resemble: Among themselves and with mother Among themselves and with queen Among themselves and with father 4. Among themselves and slightly differ from motherWhat determines whether a gamete is male or female? Explain why this difference predicts the two main forms of sexual selection.What are some benefits that come with sexual reproduction? Please select all correct answers. a. Sexual individuals must reproduce twice as much. b. Sex makes species less vulnerable to parasites. c. Males and females must expend energy finding each other. d. It potentially makes dangerous alleles less dangeous.