Embryonic Development and Gametogenesis

What is the primary function of meiosis in gametogenesis?

What is the correct sequence of embryonic development?

What type of fertilization occurs inside the body?

What is the process of sperm preparation for fertilization called?

What is the term for the production of sperm in males?

What is the importance of crossing over in meiosis?

What is the result of crossing over during prophase I of meiosis?

What is the purpose of cytokinesis in meiosis?

What is the stage of embryonic development where cells begin to differentiate and organize into three primary layers?

What is the advantage of sexual reproduction in terms of adaptation to changing environments?

What is the result of fertilization in terms of the number of chromosomes?

What is a disadvantage of sexual reproduction in terms of energy expenditure?

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.