Educational worksheet on chromosomes with fill-in-the-blank questions and a chromosome diagram, accompanied by a rooster image.

Let's solve the problem step by step, filling in the blanks with the appropriate terms from the provided list. Here is the explanation for each question:

List of Terms:

- gametes: Cells used in sexual reproduction (sperm and eggs).
- diploid: Cells that have the complete set of chromosomes.
- haploid: Cells that have only half the number of chromosomes.
- zygote: The cell formed when two haploid cells combine during fertilization.
- homolog: Matching chromosomes that are the same size and have the same pattern.
- DNA: The information-storing molecule that makes up chromosomes.
- meiosis: The process of cell division that results in 4 haploid cells, used in sexual reproduction.
- trisomy: A condition where there is an extra chromosome in a set, causing disorders like Down syndrome.
- mitosis: The process of cell division that results in 2 diploid cells, used for growth and repair.
- karyotype: An image of chromosomes, paired and ordered from large to small.

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Filling in the Blanks:

1. Cells that have the complete set of chromosomes are called _________.
- Answer: diploid
- Explanation: Diploid cells contain the full complement of chromosomes, typically two sets (one from each parent).

2. Cells that have only half of that number are called _________.
- Answer: haploid
- Explanation: Haploid cells contain only one set of chromosomes, which is half the number found in diploid cells.

3. Process of cell division that results in 4 haploid cells used in sexual reproduction: _________.
- Answer: meiosis
- Explanation: Meiosis is a specialized type of cell division that reduces the chromosome number by half, producing four haploid cells (e.g., sperm or egg cells).

4. Process of cell division that results in 2 diploid cells, used for growth and repair: _________.
- Answer: mitosis
- Explanation: Mitosis is the process of cell division that produces two genetically identical diploid daughter cells, essential for growth, development, and tissue repair.

5. Two haploid cells combine during fertilization to form a _________.
- Answer: zygote
- Explanation: During fertilization, a sperm cell (haploid) and an egg cell (haploid) fuse to form a zygote, which is a diploid cell containing the full set of chromosomes.

6. Type of cells used in sexual reproduction, sperm and eggs: _________.
- Answer: gametes
- Explanation: Gametes are the reproductive cells (sperm and eggs) involved in sexual reproduction.

7. Information storing molecule that makes up chromosomes: _________.
- Answer: DNA
- Explanation: DNA (deoxyribonucleic acid) is the genetic material that carries the instructions for the development, functioning, and reproduction of all living organisms.

8. A matching chromosomes, it is the same size and has the same pattern: _________.
- Answer: homolog
- Explanation: Homologous chromosomes are pairs of chromosomes that are the same size and shape, carrying the same genes but potentially different alleles.

9. When there is an extra chromosome in a set, causing disorders like Down syndrome: _________.
- Answer: trisomy
- Explanation: Trisomy refers to the presence of an extra chromosome in a set, leading to conditions such as Down syndrome (Trisomy 21).

10. An image of chromosomes, paired and ordered from large to small: _________.
- Answer: karyotype
- Explanation: A karyotype is a visual representation of an organism's chromosomes, arranged in order of size and paired based on their homology.

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Final Answer:

1. diploid
2. haploid
3. meiosis
4. mitosis
5. zygote
6. gametes
7. DNA
8. homolog
9. trisomy
10. karyotype

Boxed Final Answer:
\[
\boxed{\text{diploid, haploid, meiosis, mitosis, zygote, gametes, DNA, homolog, trisomy, karyotype}}
\]