Mitosis, meiosis, evolución, adaptación y seguridad hídrica Flashcards
(26 cards)
What is mitosis?
Mitosis is the process of cell division that results in two genetically identical daughter cells from a single parent cell.
What is meiosis?
Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four genetically diverse gametes.
True or False: Mitosis results in four daughter cells.
False
Fill in the blank: Mitosis consists of _______ main phases.
five
What are the phases of mitosis?
Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis.
What is the main purpose of meiosis?
The main purpose of meiosis is to produce gametes for sexual reproduction.
Multiple Choice: Which of the following is a key feature of meiosis?
Reduction of chromosome number.
True or False: Meiosis occurs in somatic cells.
False
What is the role of crossing over in meiosis?
Crossing over increases genetic diversity by exchanging genetic material between homologous chromosomes.
Fill in the blank: Evolution is the change in the _______ of a population over time.
allele frequencies
What is natural selection?
Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.
True or False: Adaptation is a process that occurs only in individual organisms.
False
What is the significance of genetic variation in evolution?
Genetic variation is crucial for the process of natural selection and adaptation.
Multiple Choice: Which of the following is NOT a mechanism of evolution?
Cultural transmission.
What is the definition of adaptation?
Adaptation is a characteristic that enhances the survival and reproduction of organisms in a specific environment.
Fill in the blank: Water security refers to the sustainable management of _______.
water resources
True or False: Water scarcity can lead to conflicts over resources.
True
What are the main factors affecting water security?
Climate change, population growth, and pollution.
Multiple Choice: Which strategy is used to enhance water security?
Rainwater harvesting.
What is a key challenge to water security?
The increasing demand for water due to urbanization and agriculture.
Fill in the blank: The process by which species evolve over time is called _______.
evolution
What is the role of genetic drift in evolution?
Genetic drift is a mechanism of evolution that causes random changes in allele frequencies in a population.
True or False: All adaptations are beneficial.
False
What is the concept of carrying capacity?
Carrying capacity is the maximum population size that an environment can sustain indefinitely.
