After reading the paragraphs below, answer the questions that follow.
Mr. and Mrs. Smith have three sons in elementary school. Two of their children are progressing normally, but their youngest son, Charles, has been much slower than his siblings in developing speech and language skills. His parents are concerned that he has a learning disability and decide to investigate further. Since some learning disabilities can be genetically based, their pediatrician recommends a chromosomal analysis.
The results show that Charles has a trisomy of the sex chromosomes, diagnosed as XYY. A mistake during sperm formation resulted in an extra copy of the Y chromosome. The extra copy was passed on to Charles during fertilization. Most often, this chromosomal change causes no unusual physical features or medical problems, but those with trisomy of the sex chromosomes may have a higher-than-normal risk of delays in learning development.
During which stage of meiosis could this mistake have occurred?
◦ telophase II
◦ prophase I
◦ anaphase II
◦ telophase I
Reading a Pap smear.
As in this photo from Tampa, Florida, hidden cameras now follow us almost everywhere we go. How do ...
Berthe Morisot, Reading.
Connect the leads of the meter to contacts 30 and 87 of the relay socket. The reading of 4.7 ...
Use the answer sheet below the problems for your answer
Biology Fun Questions