Question:

2nd review please help?

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1. Gametes are (Points: 1)

End products of mitosis

Vegetative cells

s*x cells

None of these

2. The fusion of an egg and sperm results in (Points: 1)

Daughter cell

Mother cell

Bud

Zygote

3. If a parent cell has 12 chromosomes, then each daughter cell (gamete) following meiosis will have: (Points: 1)

48 chromosomes

24 chromosomes

6 chromosomes

12 chromosomes

4. To maintain the chromosome number of a species, gamete must be (Points: 1)

Diploid

Haploid

Dominant

Recessive

5. A reduction division occurs during (Points: 1)

Segregation

Independent assortment

Mitosis

Meiosis

6. Homologous chromosomes pair up during (Points: 1)

Metaphase i

Prophase ii

Mitosis

Prophase i

7. Unlike mitosis, meiosis of a single cell results in the formation of (Points: 1)

Two genetically identical cells

Three identical polar bodies

Four genetically identical sperm cells

Four genetically different cells

8. The chromosome number is reduced by meiosis because between meiosis i and meiosis ii (Points: 1)

Crossing over occurs

Dna replication occurs twice

Tetrads develop

Dna replication does not occur

9. Each of the following is related to the process of meiosis except (Points: 1)

Formation of haploid cells

Process of reduction division

Separation of homologous chromosomes

None of these

10. A bivalent (tetrad) is (Points: 1)

A homologous chromosome

A pair of homologous chromosomes

A duplicated chromosome consisting of sister chromatids

The 2 daughter cells after meiosis

11. Match the following terms with the definition. (Points: 10)

Matching:

Answer Potential Matches:

: Haploid cell 1: Production of gametes

2: Half set of chromosomes

3: Production of sperm

4: Both male and female reproductive organs

5: Failure of chromosomes to separate during meiosis

6: Result of fertilization

7: Homologous chromosomes separate

8: s*x cell

9: Simple sexual reproduction

10: Full set of chromosomes

: Diploid cell

: Conjugation

: Anaphase i

: Meiosis

: Gamete

: Hermaphrodite

: Nondisjunction

: Spermatogenesis

: Zygote

12. The female gamete is the egg/ovum. (Points: 1)

True

False

13. Gametes are produced by the process of gametogenesis or mitosis. (Points: 1)

True

False

14. The male gamete is the _______________. (Points: 1)

15. Formation of sperm in the testes is called _______________. (Points: 1)

16. Organs in animals that produce gametes are _______________. (Points: 1)

17. Organisms that have both testes and ovaries are _______________. (Points: 1)

18. Formation of eggs in the ovaries is called _______________. (Points: 1)

19. The fusion of the egg and sperm is called _______________. (Points: 1)

20. If an organism has a chromosome number of 12 its haploid number is _______________. (enter the number) (Points: 1)

21. During meiosis, new gene combinations result from _______________. (two words) (Points: 1)

22. In males, spermatogenesis results in _______________ sperm cells. (enter the number) (Points: 1)

23. Fertilization restores the _______________ number of chromosomes. (Points: 1)

24. Sexual reproduction increases the _______________ within a species. (Points: 1)

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1 ANSWERS


  1. 1.s*x cells

    2.zygote

    3.6 chromosomes

    4.diploid

    5.meiosis

    6.mitosis

    7.four genetically different cells

    8.crossing over occurs

    9.none of these

    10.a duplicated.......chromatids

    12.true

    13.false

    14.sperm

    19.fertilisation

    20.6

    21.2 cells

    24.variation

    i answered the ones i knew!!

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