Posts Tagged ‘fertilization’

IVF role play

Friday, November 25th, 2011

sperm injection into egg on wikimedia commons

We are going to try something a little different to help us learn about the process of IVF, and the ethical considerations that go along with it.  Here’s the situation:

A couple have been trying to conceive for over 3 years.  They have had 2 miscarriages. They are considering IVF as their next step. The man is really keen to go ahead with it, but his wife is skeptical.  They have an appointment with a doctor who is a specialist in the area of fertility and IVF.

What to do:

  • Get into groups of 3.
  • Each person will have their own role to play – decide who is going to be the doctor, who is going to be the woman and who is going to be the husband.
  • The doctor must become knowledgeable about the process of IVF, so that s/he can explain it to the couple and answer any questions they may have.
  • The woman must be ready to listen, but also have a well thought out list of concerns about the negative aspects of this treatment and the ethical considerations she is worried about.
  • The husband must have his arguments ready as to why he thinks the treatment would be a good next step for them, and address any of his wife’s concerns.
  • Spend about 30-40 mins researching your role.
  • Role play the interview between the doctor and the couple.
  • Reflect on the process – what difficulties did you find? Is there a “right” answer to this problem? Include your thoughts in a comment on this post.

Reproduction in flowering plants

Wednesday, March 30th, 2011

White flower by doug88888 on flickr

Flowers are the reproductive organs of angiospermophytes.  You will get the chance to disect one, and to draw and label it.  Some flowers are pollinated by wind, others by insects.  We’ll focus on the insect pollinated ones in this topic.  You will also need to be able to distinguish between these three processes:- pollination, fertilization and seed dispersal.

We’ll then take a look at seeds and seed structure, and the process of germination.  Finally we will learn about phytochromes and their role in controlling flowering in long-day and short-day plants.  Read about photoperiodism here.

Be prepared to do some independent reading from your textbooks on this topic.  Here is Mr Taylor’s presentation.  And here is another useful one. Reproduction in angiospermophytes

More reproduction

Monday, January 4th, 2010
Sertoli cells from google images

Sertoli cells from google images

We covered the basics last semester – now on to the detailed HL stuff to do with reproduction.  Check out this presentation, which has good information and some great links to explore.

We’ll start by reviewing the stucture of egg and sperm. then look at how they are produced.  You can read up on the processes of spermatogenesis and oogenesis in your textbooks on pages 265/6.  We’ll take a more detailed look at the process of fertilization, pregnancy and childbirth.

You can also use this powerpoint from Mr Hobbins 🙂 Reproduction Higher