BIOL 309 Study Guide - Quiz Guide: Dihybrid Cross, Sister Chromatids, Meiosis

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goldcoyote731

16 Sep 2016

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Document Summary

Mitosis: clonal replication, for somatic cells, stages. Migrate to the equatorial plane of the cell. Centromere splits and sister chromatids separate (disjunction) from each other. Chromosomes decadence and nuclear membrane forms around them. The splitting of the cytoplasm into two daughter cells. Meiosis: replication and pairing of homologous chromosomes with 2 rounds of division creating. 4 daughter cells (gametes: cells are haploid, shuffles genetic composition, 50%/50% chance. Aa genotype can produce two gametes, an a or an a. Characteristics of chromosomes: heterochromatin, euchromatin, centromeres: attaches the sister chromatids to each other, splits during anaphase, telomeres. Me(cid:374)del"s pri(cid:374)ciples: dominance and segregation: that a dominant allele can mask a recessive allele, principle of independent assortment: that two heterozygous loci (genes) can produce 4 gametes. Ggww can produce, gw, gw, gw, gw. Dihybrid cross(ggww x ggww) = a 9:3:3:1 ratio. Dihybrid cross (aabb x aabb) = a 1:1:1:1 ratio.

Related Questions

31.????? interphase A. cytoplasm divided between the two daughter cells

32.????? chromosomenumber B. final phase of mitosis; daughter nuclei form

33.????? chromatid C. sum total of chromosomes in all cells of a given

type

34.????? cytokinesis D. chromosomes condense and mitotic spindle

begins to form

35.????? metaphase E. chromosomes line up at spindle equator

36.????? alleles F. sister chromatids separate, move to opposite

spindle poles now

37.????? prophase G. none between meiosis I and II

38.????? telophase H. half of a chromosome in prophase

39. ????? anaphase I. different molecular forms of the same gene

Matching

ultramarineporpoise990

1- Most of a cell's life is spend in this phase of the cell cycle:

--------------------

2- The cell cycle is a highly regulated process.

True

False

3- Cells replicate their DNA during ________________ phase.

4- In animal cells, ________________________ is the indentation of the cell's surface that marks cytokinesis, the final splitting of the membrane, in the process of cell division.

cleavage furrow

binary fission

cell plate

sister chromatids

5- Somatic ("body") cells are _______________ (2n). This means there are two copies of each chromosome.

6- During the _______ phase(s) cells perform their everyday functions.

7- When chromosomes are duplicated the two strands are called _______________________________ and they are linked together at a point called the ____________________.

sister strands; kinetochore

sister chromatids; centromere

dual chromatids; centromere

genes; chromatid

8- New somatic âbodyâ cells are formed by this process:

meiosis

binary fission

replication

mitosis

9- The cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.