Posted in P1 SBI3U Biology

SBI3U Genetics Review Questions

Mendel has a pea plant with purple flowers. He doesn’t know if it’s a carrier or true breeder. He wants to use it for a P generation. Show a the test cross he should do to determine this and help him make his decision.

A purple fozzle that is heterozygous for racers (RrBB’) crosses with a purple fozzle that is also heterozygous for racers (RrBB’). Show the Punnett square and phenotypic ratio in whole numbers for this cross.

A man who is O+ and a woman who is B- have a child. Show all the possible crosses for this couple. Show the Punnett Square, GR & PR for a cross that would produce a child that is O-.

Some solutions and some stuff on meiosis and conception.

Posted in P1 SBI3U Biology

SBI3U Fetal Pig Dissection Tutorials & Practice Quizzes

Watch the tutorials below to prepare for the dissection and culminating activity that will go with it. This activity will be a series of slides showing dissected fetal pigs and you will have to apply your knowledge and experience to identify the structures arrows are pointing to based on their name or function.

External anatomy WILL be covered and you can study the terms for this part by studying the terms in the Procedure section on page 510, Figure 1 on p. 510 and Figure 2 on p. 511 of your textbook. Also read pages 510-513 to prepare for the dissection. I will be verbally instructing the dissections but the instructions will closely follow those in these pages. I’ve made some modifications to this section though.

Posted in P1 SBI3U Biology

SBI3U Exam Review Topics

  • microscope parts
  • proper use of microscopes
  • magnifications and diameters of fields of view
  • measuring and calculating specimen sizes
  • forms of chromosomes – DNA, chromatin, chromatids, dyads, tetrads
  • cell cycle
  • mitosis in detail
  • meiosis in detail
  • meiosis in males versus females
  • Mendel and his pea experiments
  • Punnett Squares
  • Pedigrees
  • Test Cross
  • dihybrid cross – FOIL
  • Forms of inheritance – dominance, incomplete dominance, codominance, multiple alleles (ABO blood typing), sex-linked inheritance
  • Law of Segregation & Law of Independent Assortment
  • Charles Darwin – evolution by natural selection
  • gene expression – switches
  • evolution based on embryology
  • forms of natural selection – stabilizing, directional, disruptive, sexual
  • genetic drift, bottleneck, founder effect
  • homologous, analogous and vestigial features
  • convergent and divergent evolution
  • allopatric and sympatric speciation and the mechanisms of isolation that correspond to these
  • taxonomy – Dear King Philip Came Over From Germany Smiling
  • binomial nomenclature – giving species their names
  • phylogeny – clades
  • dichotomous keys – how to use them & how to make them
  • eubacteria & archaea kingdoms
  • viruses & protist kingdoms
  • fungi & plant kingdoms
  • animal kingdom
  • Circulatory system
  • Respiratory system
  • Digestive system

Exam Format:

Multiple choice, diagram labeling and drawing, problem-solving (bring your calculator and ruler!).

Posted in P1 SBI3U Biology

SBI3U Circulatory System Warm Up


What component of blood do white blood cells make up?
Which white blood cells are non-specific and also known as “big eaters”?
How many molecules of hemoglobin are in one erythrocyte?
Where does blood go in a) arteries? b) veins??
What are the main components of the tunica intima, tunica media and tunica externa?
How is the structure of arteries different than veins and why is this so?
Why are capillaries only one cell thick and what are these cells called?