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Fertilization

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During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...

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Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male reproductive...

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Related Experiment Video

Updated: Jun 12, 2026

Collection of Human Follicular Fluid, Follicle Somatic Cells, and Immature Oocytes from Individuals Undergoing In Vitro Fertilization

Collection of Human Follicular Fluid, Follicle Somatic Cells, and Immature Oocytes from Individuals Undergoing In Vitro Fertilization

Published on: October 24, 2025

Attitudes toward egg and sperm donation.

David Lester¹, Adrian Furnham, Natalie Salem

¹Psychology Program, The Richard Stockton College of New Jersey, Jimmie Leeds Road, Pomona, NJ 08240-0195, USA. lesterd@stockton.edu

Psychological Reports

|June 8, 2010

Summary

This summary is machine-generated.

Student approval for egg donation was linked to age, sex, and neuroticism. Sperm donation approval was primarily associated with age in this study of college students.

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Area of Science:

Psychology
Reproductive Science
Sociology

Background:

Gamete donation (egg and sperm) is a critical component of assisted reproductive technologies.
Understanding student perceptions of gamete donation is important for recruitment and ethical considerations.
Previous research has explored attitudes towards donation, but predictors require further investigation.

Purpose of the Study:

To identify demographic and personality predictors of approval for egg donation among American undergraduates.
To identify demographic and personality predictors of approval for sperm donation among American undergraduates.

Main Methods:

Survey administered to 124 American undergraduate students.
Statistical analysis including multiple regression to assess predictors of donation approval.

Main Results:

Egg donation approval was significantly predicted by age, sex, and Neuroticism scores (R²=.14).
Sperm donation approval was significantly predicted only by age (R²=.07).

Conclusions:

Age, sex, and neuroticism are key factors influencing undergraduate acceptance of egg donation.
Age is a primary demographic factor associated with undergraduate acceptance of sperm donation.
Findings highlight the need for tailored approaches when discussing gamete donation with diverse student populations.