Question

Matching the following terms with their definitions.

-       A.       B.       C.       D.       E.       F.       G.       H.       I.    centromere       -       A.       B.       C.       D.       E.       F.       G.       H.       I.    crossing over       -       A.       B.       C.       D.       E.       F.       G.       H.       I.    diploid       -       A.       B.       C.       D.       E.       F.       G.       H.       I.    fertilization       -       A.       B.       C.       D.       E.       F.       G.       H.       I.    gametes       -       A.       B.       C.       D.       E.       F.       G.       H.       I.    haploid       -       A.       B.       C.       D.       E.       F.       G.       H.       I.    homologous chromosome pair       -       A.       B.       C.       D.       E.       F.       G.       H.       I.    nondisjunction       -       A.       B.       C.       D.       E.       F.       G.       H.       I.    sister chromatids

A. Having two sets of chromosomes, one inherited from the mother and the other set inherited from the father. B. Having one set of chromosomes. C. A haploid reproductive cell. D. In diploid organisms, a pair of chromosomes that are the same size and shape and contain the same genes in the same positions. E. The exchange of corresponding segments of non-sister chromatids between a pair of homologous chromosomes during meiosis I. F. Fusion of the nuclei of two gametes (haploid cells) to form a zygote (diploid cell). G. An error that can occur during meiosis or mitosis; it results in one daughter cell receiving two copies of a particular chromosomes while the other daughter cell receives none. H. The paired, double-stranded DNA copies of a recently replicated chromosomes. I. The region of a replicated chromosome where the two sister chromatids are joined

Answer 1

1. Centromere - I. The region of the replicated chromosome where the two sister chromatids are joined.

2.Crossing over - E .The exchange of corresponding segments of non-sister chromatids between a pair of homologous chromosomes during meiosis I.

3. Diploid -A. Having two sets of chromosomes, one inherited from the mother and the other set inherited from the father.

4. Fertilization - F. Fusion of the nuclei of two gametes (haploid cells) to form a zygote (diploid cell).

5. Gametes -C. A haploid reproductive cell.

6. Haploid - B.Having one set of chromosomes.

7. Homologous chromosomes - D.In diploid organisms, a pair of chromosomes that are the same size and shape and contain the same genes in the same positions.

8. Nondisjunction - G. An error that can occur during meiosis or mitosis; it results in one daughter cell receiving two copies of a particular chromosomes while the other daughter cell receives none.

9.Sister chromatids- H. The paired, double-stranded DNA copies of a recently replicated chromosomes.