Check up questions, Chapter 3 (Lecture 6) The Principal of Independent Assortmen

Question

Check up questions, Chapter 3 (Lecture 6) The Principal of Independent Assortment, Mendelian Inheritance in Humans: Q. 24, p. 68: The diagram on the left shows a hypothetical diploid cell. The recessive allele for albinism is represented by a, and the recessive allele for deafness is represented by d. The normal alleles for these conditions are represented by A and D, respectively Homologous pair of #11 chromosome 1. According to Mendel's law of segregation, what is segregating in the cell? 2. According to Mendel's principal of independent assortment, what is independently assorting in the cell? 3. Write THE GENOTYPE of the individual from whom this cell was taken for these two traits. bod 4. What is THE PHENOTYPE of this individual D‰ . 5. After the meiosis is complete, how many alleles of each gene will be present in each of ogous pair of four progeny (daughter) cells #13 chromosome

Explanation / Answer

Answer

1. Mendel of segregation - Paired homologous chromosomes (A or a or D or d) separate from each other
and migrate to opposite poles of the nucleus.

2. Independent assortment - Paired homologous chromosomes (A or a and D or d) separate from each other
and migrate to opposite poles of the nucleus.

3. Genotype - AaDd

4. Phenotype - No albinism and No deafness.
             - They are normal phenotype

5. After meiosis complete each daughter cells contains two alleles.
The daughter cells have possibility alleles
1. ad
2. Ad
3. aD
4. Ad

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