12 Questions
What is the primary function of meiosis in gametogenesis?
To reduce chromosome number by half
What is the correct sequence of embryonic development?
Zygote, blastula, gastrula, organogenesis, morphogenesis
What type of fertilization occurs inside the body?
Internal fertilization
What is the process of sperm preparation for fertilization called?
Capacitation
What is the term for the production of sperm in males?
Spermatogenesis
What is the importance of crossing over in meiosis?
Increases genetic diversity
What is the result of crossing over during prophase I of meiosis?
exchanging genetic material between homologous chromosomes, increasing genetic diversity
What is the purpose of cytokinesis in meiosis?
to divide the cytoplasm, resulting in two cells
What is the stage of embryonic development where cells begin to differentiate and organize into three primary layers?
Gastrulation
What is the advantage of sexual reproduction in terms of adaptation to changing environments?
increased genetic diversity, allowing for better adaptation to changing environments
What is the result of fertilization in terms of the number of chromosomes?
restoration of the diploid number of chromosomes
What is a disadvantage of sexual reproduction in terms of energy expenditure?
it is energy-intensive
Study Notes
Embryonic Development
- A fertilized egg develops into a newborn through various stages
- Stages: Zygote (fertilized egg), Blastula (ball of cells), Gastrula (three primary layers of cells), Organogenesis (formation of organs), and Morphogenesis (formation of body shape)
Gametogenesis
- The process by which gametes (sperm or egg cells) are produced
- Types: Spermatogenesis (production of sperm in males) and Oogenesis (production of eggs in females)
- Stages: Mitosis (multiplication of germ cells), Meiosis (reduction of chromosome number), and Maturation (development of gametes)
Meiosis
- Type of cell division that reduces chromosome number by half
- Occurs in gametogenesis
- Stages: Meiosis I (reduction of chromosome number) and Meiosis II (separation of sister chromatids)
- Importance: Increases genetic diversity through crossing over and independent assortment, and ensures proper chromosome number in offspring
Fertilization
- Process by which sperm and egg cells fuse to form a zygote
- Types: External fertilization (outside the body) and Internal fertilization (inside the body)
- Steps: Capacitation (sperm preparation for fertilization), Acrosome reaction (sperm penetration of egg)
Reproductive Strategies
- Sexual Reproduction: Increased genetic diversity, adaptation to changing environments, but energy-intensive and vulnerable to predators during reproduction
Quiz on the process of embryonic development from fertilization to birth, including stages such as zygote, blastula, gastrula, organogenesis, and morphogenesis, as well as gametogenesis, including spermatogenesis and oogenesis.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
