Question

1.Which of the following are haploid?

a.daughter cells of mitosis

b.daughter cells of meiosis I

c.daughter cells of meiosis II

6.Sister chromatids separate during ____.

a.metaphase of mitosis

b.anaphase of mitosis

c.metaphase I of meiosis

d.anaphase I of meiosis

e.metaphase II of meiosis

f.anaphase II of meiosis

2.Dawn and Ron both have type A blood. Their son John has type O blood. What are the possible genotypes for Dawn?

SELECT ALL THAT APPLY

1.I^AI^A

8. I^Ai

9.I^AI^B

3.People who carry both the sickle-cell allele and the normal allele make red blood cells that have both sickle-cell hemoglobin and normal hemoglobin. This is an example of a(n) _________ trait.

a.completely dominant

b.incompletely dominant

c.codominant

d.recessive

Answer 1

1. Which of the following is haploid?

a.daughter cells of mitosis

Daughter cells of mitosis diploid. Mitosis is not a reduction division since it usually happens in somatic cells

b.daughter cells of meiosis I

Meiosis I is the reduction division which produces haploid daughter cells

c.daughter cells of meiosis II

Daughter cells of meiosis II are also haploid cells even though the meiosis II division is similar to mitosis. In meiosis II, sister chromatids are separated from the haploid parent cell formed from meiosis I, to form two haploid daughter cells like in a mitotic division.

6. Sister chromatids separate during ____.

a.metaphase of mitosis will be diploid. ( mitosis will not produce haploid cells)

c.metaphase I of meiosis will be diploid. Because metaphase I of meiosis is characterized by the alignment of paired chromosomes, not by the separation of homologous which eventually causes the formation of haploids.

d.anaphase I of meiosis cannot be claimed as haploid. Anaphase is the stage of attachment of spindle fiber to the homologous pair and starting of separation to poles. but it can be merely classified as haploid

e.metaphase II of meiosis will be haploid in nature. By the completion of meiosis I, the daughter cells will be in haploid state

f.anaphase II of meiosis will also be in the haploid state since they entered the second cycle of meiosis

2. Dawn and Ron both have type A blood. Their son John has type O blood. What are the possible genotypes for Dawn?

genotype for blood group O is - ii

possible genotype for A blood group of Dawn and Ron - IAIA or IAi

So possibilities are

       IAIA(father) * IAIA(mother): IAIA (child), with A blood group

       IAIA(father) * IAi(mother): IAIA or IAi (child), both genotype will result in A blood group

       IAIA(mother) * IAi(father): IAIA or IAi (child), both genotype will result in A blood group

       IAi (father) * IAi (mother): IAIA (Blood group A) or IAi (Blood group A) or iIA (Blood group A) or ii(blood group O)

so for having an O blood group child, both of the parents should have IAi genotype

3. People who carry both the sickle-cell allele and the normal allele make red blood cells that have both sickle-cell hemoglobin and normal hemoglobin. This is an example of a(n) _________ trait.

The answer is Codominant

a.completely dominant: one allele is completely masking over the other being recessive

b.incompletely dominant: intermediate inheritance in which one allele is not completely not expressed over the other (eg: flower color, red and white parents giving pink colored flower in offspring

c.codominant: both alleles are expressing simultaneously and individually. (another example is blood grouping)

d.recessive : when one allele is completely dominant over the other, it will become recessive or phenotype will be absent