Exploring Mitosis, Meiosis, and Sexual Reproduction

The video explains the process of sexual reproduction, focusing on how chromosomes are inherited from parents. It covers the formation of a zygote through fertilization, the difference between haploid and diploid numbers, and the role of natural selection in fertilization. The video also discusses cell division via mitosis, differentiation, and the production of gametes through meiosis. It highlights the impact of mutations on genetic variation and inheritance.

What determines the gender of a human being?

• The total number of chromosomes

• The combination of X and Y chromosomes from both parents

• The Y chromosome from the father

• The X chromosome from the mother

How many chromosomes does a human zygote have?

• 69

• 92

• 23

• 46

What term describes the number of chromosomes in gametes?

• Diploid

• Haploid

• Monoploid

• Polyploid

What is the diploid number of chromosomes in humans?

• 69

• 23

• 46

• 92

Which cells in the human body are haploid?

• Somatic cells

• Brain cells

• Gametes

• Heart cells

Which process is responsible for the initial cell division of a zygote?

• Mitosis

• Differentiation

• Fertilization

• Meiosis

What is the result of mitosis?

• Four diploid cells

• Four haploid cells

• Two haploid cells

• Two diploid cells

What is the primary purpose of meiosis in sexual reproduction?

• To duplicate chromosomes

• To reduce the chromosome number by half

• To increase genetic diversity

• Both B and C

Which of the following is a key feature of meiosis?

• It occurs in all body cells

• It results in diploid cells

• It produces identical cells

• It leads to genetic variation

How does a mutation in a somatic cell affect offspring?

• It increases genetic diversity in the offspring

• It is passed on to the offspring

• It affects the offspring's ability to reproduce

• It does not affect the offspring