Friday, January 31, 2020

Punnett Square and Pedigree Chart.

You will learn how to arrange the Punnett Square to determine the possible phenotype and genotype of the offspring.  You will also be taught the terminology; homozygous and heterzygous,
dominant and recessive alleles.

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Punnett Square:


Thursday, January 30, 2020

Mitosis and Meiosis Worksheet

You will work individually to fill in the blanks on the worksheet.

Tuesday, January 28, 2020

Compare and Contrast Mitosis and Meiosis

You will work individually and without the textbook to compare and contrast mitosis and meiosis

Monday, January 27, 2020

CoronaVirus

Information about the current outbreak of the current out break of the virus will be discussed and what is being done to try and control the spread. 
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Manifestation of Errors in Meiosis





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 Image result for errors during meiosis

Meiosis

The creation of gametes:

This illustration outlines the stages of meiosis. In interphase, before meiosis begins, the chromosomes are duplicated. Meiosis I then proceeds through several stages. In prophase I, the chromosomes begin to condense and the nuclear envelope fragments. Homologous pairs of chromosomes line up, and chiasmata form between them. Crossing over occurs at the chiasmata. Spindle fibers emerge from the centrosomes. In prometaphase I, homologous chromosomes attach to the spindle microtubules. In metaphase I, homologous chromosomes line up at the metaphase plate. In anaphase I, the spindle microtubules pull the homologous pairs of chromosomes apart. In telophase I and cytokinesis, the sister chromatids arrive at the poles of the cell and begin to decondense. The nuclear envelope begins to form again, and cell division occurs. Meiosis II then proceeds through several stages. In prophase II, the sister chromatids condense and the nuclear envelope fragments. A new spindle begins to form. In prometaphase II, the sister chromatids become attached to the kinetochore. In metaphase II, the sister chromatids line up at the metaphase plate. In anaphase II, the sister chromatids are pulled apart by the shortening spindles. In telophase II and cytokinesis, the nuclear envelope forms again and cell division occurs, resulting in four haploid daughter cells.

Wednesday, January 15, 2020

Grading the Class Assignment

 The assignment from yesterday will be graded in class. The vocabulary words will be collected and graded.

Tuesday, January 14, 2020

Individual Work

You will work individually to answer the following questions from the textbook:
Number 6 on pages 210 and 213.

Questions 19 - 26 on page 219

Tuesday, January 7, 2020

The Cellular Basis of Reproduction and Inheritance

The vocabulary words will be discussed in details.

In addition, you will draw and label the stages of Mitosis. (Make certain to include the labeling from the textbook that is not shown here.)

 Image result for stages of mitosis

Monday, January 6, 2020

Happy New Year!!

The new year is a time to set goal.  Setting goals is important as you aspire to live the life imagined.

You will use part of the time to think about and write down you goals for immediate and distant future.