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Questions and Answers
What is the result of the interaction between the male and female reproductive systems during sexual intercourse?
What is the result of the interaction between the male and female reproductive systems during sexual intercourse?
- Activation of the female reproductive system
- Fertilization of the ovum by the sperm to form a zygote (correct)
- Formation of embryonic cells
- Production of gamete cells
When does genetic recombination occur in human reproduction?
When does genetic recombination occur in human reproduction?
- When the ovum and sperm merge into a zygote cell (correct)
- At the onset of puberty
- During sexual intercourse
- During the gestation period
What is the chromosome count in gamete cells?
What is the chromosome count in gamete cells?
- 23 single chromosomes (correct)
- 46 pairs of chromosomes
- 23 pairs of chromosomes
- 46 single chromosomes
What biological event must occur before an individual can achieve human reproduction?
What biological event must occur before an individual can achieve human reproduction?
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What initiates the typical 9-month gestation period in human reproduction?
What initiates the typical 9-month gestation period in human reproduction?
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Study Notes
Male and Female Reproductive Systems Interaction
- Sexual intercourse involves the penetration of the female vagina by the male penis, allowing for sperm transfer.
- Sperm travels through the female reproductive tract to fertilize an ovum, typically in the fallopian tubes.
Genetic Recombination in Human Reproduction
- Genetic recombination occurs during meiosis, specifically in prophase I when homologous chromosomes exchange genetic material.
- This process contributes to genetic diversity in the offspring.
Chromosome Count in Gamete Cells
- Gametes (sperm and egg cells) contain a haploid chromosome count of 23 chromosomes each.
- The diploid chromosome count in regular human cells is 46, resulting from the fusion of two gametes during fertilization.
Pre-requisites for Human Reproduction
- Gametogenesis must occur first, leading to the formation of functional sperm and eggs.
- This includes meiosis and maturation of reproductive cells.
Initiation of the Gestation Period
- The gestation period begins once fertilization takes place, forming a zygote, which then implants in the uterine wall.
- The typical duration of gestation in humans is around 9 months, or approximately 40 weeks.
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