Embedded Files
Hopefully you know now how the genetic code is written and carried around inside of us - but how do we "know" what the result will be? What features will you inherit?
Every fertilization event is random = we can predict to probability of the outcome eg 50/50 or 25/75 etc. BUT not the reality.
We'll begin with the simplest thing to predict - gender, but is still doesn't tell me why I ended up with 2 brothers and 1 sister.
Step 1 : Watch as gender prediction is explained to you. (Learn)
Mission 1 : Now see how you do - read and complete the exercises on the "Sex Determination" page in your workbook. (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Sex determination isn't always a case of X's and Y's = if you wish here is a look at some other ways of assigning gender. (Learn)
Biology isn't just a branch of Science it's a whole new language too.
Step 2 : There are some words that may be new to many of you = watch as they are explained to you. Because you will need to be fluent in using them. First up is "genotype" and "phenotype". (Learn)
Next are "dominant" and "recessive"
Then comes "heterozygous" and "homozygous"
Got all that ?
Mission 2 : Now put them to use by reading and completing the page on "Genotype and Phenotype" in your workbook. (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
One of the tools we use to help with our predictions of inheritance is a thing called a Punnett square.
Step 3 : Hopefully you should find the use of Punnett square quite straight forward. But do watch to refresh your memory or find out how to use them if you have never met one before. (Learn)
Mission 3 : Now it time for lots of practice using Punnett squares as there are a number of pages to read and complete : "An Introduction to Punnett squares", "Predicting Rat Fur Colour", "Genotypic and Phenotypic Ratios", "Floppy - Eared Rabbits", "The Cabbage Butterfly", and "Pure Breeding". (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Step 4 : You have been working with what we call a "Monohybrid" cross = looking at only one gene and its alleles. There is also a thing called a "Dihybrid" cross = 2 genes and their alleles. Watch as both are explained to you. (Learn)
The good news is that at Yr 11 you don't need to be able to use Dihybrid cross Punnett squares.
Mission 4 : Continue your practicing with Monohybrid crosses as you read and complete the pages on : "Mendel's Peas", "More Peas", and "Hairless Guinea Pigs". (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
In my family we have a history of heart disease and baldness. I've been able to figure out both where its come from (do I blame Mum or Dad or both) and how likely it is that either will effect me. I've been able to do this by constructing a Pedigree chart - a useful tool = I'm not worrying about baldness but am being careful about my heart.
Step 5 : Have a look as Pedigree charts are explained to you. (Learn)
Now put that to use -
Mission 5 : Read and complete the pages on "Pedigree Charts". (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
There is a nasty mutation, or change in a gene that leads to a genetic disorder called "Cystic Fibrosis" = your lungs and other body organs fill up with sticky mucus.
Step 6 : Watch and listen as life with this disorder is described to you. (Learn)
This was made in 2011 - she has since gone on and had to have had lung transplant.
Mission 6 : Read and complete the pedigree chart on "Cystic Fibrosis" in your workbooks. (Learn)
Imagine finding out that you are a carrier of this disorder - could your children be effected by it ?
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Mission 7 : Back to rats - read and complete the work on "Pedigree Rats" = who is "pure-breeding"? (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
So still thinking about these rats - how do you figure out if you have a pure breeding rat or not = bring on the "Test Cross".
Step 7 : It is a little tricky but here a 2 examples of how you could use it. Watch and then you should be able to use it yourself. (Learn)
Mission 8 : Now its your turn - read and complete the work on "A Test Cross" in your workbooks. (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Mission 9 : Now go back and complete the definitions page at the start of the topic and the puzzle pages at the end = these are good to help with revising for the end of topic test. (Learn)
Done that? = Share with your teacher.
Yes = now its time for your next Step/Video clip/Challenge/Mission.
No = go back and complete the Step/Video clip/Challenge/Mission please.
Final Mission : Time for the "End of Chapter Review Questions".
Is intelligence inherited or do you get it from hard work?
Report abuse