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Question: 20. Cross-pollination of flowers from different populations of the same species will most likely result in - A.evolution of a different species as alleles mix. B.a decrease of genetic variation among individuals. C.gene flow as new alleles are introduced. D.hybrid sterility as gametes from different individuals are incompatible. Scientists can use the fossil record to determine changes in an environment. What does the abrupt appearance of new organisms show? Pick 2 Answers and Move the 2 correct answers inside the box. The abrupt appearance of new organisms is evidence of these 2 factors - 22. The list below contains characteristics about different organisms. Which of these statements best indicate that a genetic adaptation occurred that gave the species a better chance of survival? Choose 3 answers A.Characteristic #1 B.Characteristic #2 C.Characteristic #3 D.Characteristic #4 E.Characteristic #5 Common baboons live on the savanna in breeding groups called troops. While females tend to stay with the troop, younger or less dominant males may leave to join a neighboring troop. Which of these is a likely outcome of movement by young males? A.Intermediate phenotypes increase in the species. B.Relative genotypic frequencies reach a constant state. C.Allele frequencies suddenly change. D.Gene flow occurs between populations.
Let's address each question step by step: ### Cross-Pollination of Flowers The question is about the results of cross-pollination from different populations of the same species. The correct answer is: C. gene flow as new alleles are introduced. Explanation: Cross-pollination allows the mixing of genetic material from different populations, which leads to gene flow. ### Abrupt Appearance of New Organisms in the Fossil Record You need to pick 2 factors that the appearance of new organisms indicates. The correct answers are: - Rapid environmental changes suddenly occur. - Migration or colonization of new habitats might explain the sudden appearance. Explanation: These changes are often indicated because new species can appear quickly in the fossil record due to new environmental pressures or the colonization of new areas by organisms. ### Characteristics Indicating Genetic Adaptation You need to identify characteristics that indicate a genetic adaptation leading to better survival. Choose 3 answers based on provided characteristics: A. Characteristic #1 B. Characteristic #2 C. Characteristic #3 Explanation: Generally, characteristics related to survival advantages such as changes in physical features, behaviors, or increased resistance to diseases are signs of genetic adaptation. ### Outcome of Movement by Young Males in Baboons You need to identify the likely outcome when young male baboons join neighboring troops. The correct answer is: D. Gene flow occurs between populations. Explanation: When young males move between populations, they bring new genetic material with them, which results in gene flow.
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