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Biology Genetics 9th Grade Already Verified A+

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Biology Genetics 9th Grade Already Verified A+ 1. What are chromosomes? - Answer: Chromosomes are thread-like structures composed of DNA that carry genes, the fundamental units of inheritance. 2. What defines a gene? - Answer: A gene is a specific sequence of DNA that encodes information ...

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  • August 3, 2024
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  • 2024/2025
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Biology Genetics 9th Grade Already Verified A+


1. What are chromosomes?

- Answer: Chromosomes are thread-like structures composed of DNA that carry genes, the
fundamental units of inheritance.



2. What defines a gene?

- Answer: A gene is a specific sequence of DNA that encodes information for producing proteins,
thereby determining various traits.



3. What is DNA?

- Answer: DNA, or deoxyribonucleic acid, is a long linear molecule found in a cell's nucleus, made up of
nucleotides and arranged in a double helix structure.



4. What occurs during mitosis?

- Answer: Mitosis is a key part of eukaryotic cell division where the nucleus divides, resulting in two
identical daughter cells.



5. What are gametes?

- Answer: Gametes are the reproductive cells, specifically sperm and eggs, involved in sexual
reproduction.



6. What constitutes an egg in animals?

- Answer: An egg refers to the female reproductive structure that includes the ovum or embryo along
with protective and nutrient-rich membranes.



7. What is sperm?

- Answer: Sperm are the male reproductive cells responsible for fertilizing the egg.



8. What is a zygote?

, - Answer: A zygote is the initial cell formed when a sperm fertilizes an egg; it is the fertilized egg.



9. Describe the process of meiosis.

- Answer: Meiosis is a type of cell division that reduces the chromosome number by half through the
separation of homologous chromosomes in diploid cells.



10. What is spermatogenesis?

- Answer: Spermatogenesis is the process through which spermatozoa (sperm cells) develop.



11. What does oogenesis refer to?

- Answer: Oogenesis is the process of developing ova (egg cells).



12. What are testes?

- Answer: Testes are the male gonads that produce sperm and secrete male sex hormones.



13. What is the function of ovaries?

- Answer: The ovaries are female reproductive organs responsible for the production of eggs.



14. Define homologous chromosomes.

- Answer: Homologous chromosomes are pairs of chromosomes, one from each parent, that have the
same structure and gene sequence.



15. What does the term diploid mean?

- Answer: Diploid refers to a cell that contains two complete sets of homologous chromosomes.



16. What is meant by haploid?

- Answer: Haploid indicates a cell that contains only one set of chromosomes, and thus, a single set of
genes.



17. What does genetics study?

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