1the diagram shows the normal sequence of genes in a particular chromosome which chromosome could have resulted from a deletion that occurred in this chromosomes
a. abc*ghijklmn
b. abd*ghijklmndef
c. abcfed*ghijklmn
d. abcdefed*ghijklmn
2mrs wade has type o blood and her mother has type b her mother stated that her father has type ab blood what is the chance that he is her father
a. 100%
b. 50%
c. 0%
number three is the second image
review the image below select the best answer for the karyotype shown (don't forget to count the chromosomes)
a. normal female
b. abnormal fem
c. normal male
d. abnormal male

Answer:

1. A. abc*ghijklmn

Through deletion, the part of the chromosome -def* was lost.

2. C. 0%

Two parents with B and AB will produce children with A, B or AB blood types. Never an O child. In order for this to be possible, the father would have to be A, B or O.

3. John

The gel electrophoresis  method will separate the DNA according to molecular size. This pattern is unique to each individual.

4. B. Abnormal female - 47 chromosomes.

On chromosome pair 21 it can be observed a third copy of this chromosome. This is caused by the Down syndrome, also known as trisomy 21. It is a female, because the last chromosome pair, number 23 has two identical copies, commonly denoted as XX.

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