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Punnett Squares
⪢ A diagram used to predict the genotypes
of a particular cross or breeding
experiment.
⪢ Named after Reginald Punnett who created
the technique.
Punnett Square Virtual Lab
Click this link to perform
the virtual lab:
http://www.glencoe.com/sites/common_asset
s/science/virtual_labs/E09/E09.html
READ THE INSTRUCTIONS!
If you read carefully, it’s
really simple. If you don’t
read, you’re going to get
confused and frustrated…
A student answer sheet is
posted under classwork -
DON’T ANSWER THEM
ONLINE!
Go the classwork section
and complete the Actively
assignment: Punnett
Squares
Cross a heterozygous black (Bb) cat with a
homozygous recessive (bb) brown cat.
What will the offspring look like (phenotype)?
What will be the possible genotypes?
Punnett
Square
Tutorial
with Ms.
Perry :)
Click on the
link for help!
Cross a red flower (RR) with a heterozygous
red flower (Rr).
What will the offspring look like (phenotype)?
What will be the possible genotypes?
What is Independent Assortment?
⪢ States that the alleles of two (or more)
different genes get sorted into gametes
independently of one another
⪢ In other words, the allele a gamete receives
for one gene does not influence the allele
received for another gene
What is the Law of Segregation?
⪢ Only one of the two gene copies
present in an organism is
distributed to each gamete (egg or
sperm cell) that it makes
⪢ Where the gene ends up is totally
random
Go the classwork section and
complete the Actively
assignment: Non-Mendelian
Inheritance
Click on the link when you’re ready to take
the quiz: Unit 4 - Week 4 Quiz
It’s QUIZ time!
You smarty pants will
have no trouble...Good
luck!
point Quiz

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Unit 4 week 4

  • 1. Punnett Squares ⪢ A diagram used to predict the genotypes of a particular cross or breeding experiment. ⪢ Named after Reginald Punnett who created the technique.
  • 2. Punnett Square Virtual Lab Click this link to perform the virtual lab: http://www.glencoe.com/sites/common_asset s/science/virtual_labs/E09/E09.html READ THE INSTRUCTIONS! If you read carefully, it’s really simple. If you don’t read, you’re going to get confused and frustrated… A student answer sheet is posted under classwork - DON’T ANSWER THEM ONLINE!
  • 3. Go the classwork section and complete the Actively assignment: Punnett Squares
  • 4. Cross a heterozygous black (Bb) cat with a homozygous recessive (bb) brown cat. What will the offspring look like (phenotype)? What will be the possible genotypes? Punnett Square Tutorial with Ms. Perry :) Click on the link for help!
  • 5. Cross a red flower (RR) with a heterozygous red flower (Rr). What will the offspring look like (phenotype)? What will be the possible genotypes?
  • 6. What is Independent Assortment? ⪢ States that the alleles of two (or more) different genes get sorted into gametes independently of one another ⪢ In other words, the allele a gamete receives for one gene does not influence the allele received for another gene
  • 7.
  • 8. What is the Law of Segregation? ⪢ Only one of the two gene copies present in an organism is distributed to each gamete (egg or sperm cell) that it makes ⪢ Where the gene ends up is totally random
  • 9.
  • 10. Go the classwork section and complete the Actively assignment: Non-Mendelian Inheritance
  • 11. Click on the link when you’re ready to take the quiz: Unit 4 - Week 4 Quiz It’s QUIZ time! You smarty pants will have no trouble...Good luck! point Quiz