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Response Page

This text discusses the cross between a heterozygous brown fur Labrador and a homozygous yellow fur Labrador using a Punnett square. It explains the phenotypes and genotypes of the puppies resulting from the cross.

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Response Page

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Presentation Transcript

  1. Response Page In Labrador dogs the brown fur allele is dominant to the yellow fur allele. On your RP make a punnett square to cross a heterozygous brown with a homozygous yellow. What would the phenotypes and genotypes be of the puppies?

  2. Write this • Bb x bb • B b b Bb bb • b • Bb bb • .

  3. Wed 3/12 • No Response page today. Read over your Balderdash words even if you made a 104% Standard S7L3. Students will recognize how biological traits are passed on to successive generations. Today in Science ! Balderdash Retest Finish DNA and RNA page Finish Sponge Bob HW Get notebook organized. New HW: Punnett Square WS

  4. Wed 3/12 Response page • Make a punnett and cross a heterozygous for freckles Ff with a homozygous no freckles ff Standard S7L3. Students will recognize how biological traits are passed on to successive generations. Today in Science ! Balderdash Retest Finish DNA and RNA page Finish Sponge Bob HW Get notebook organized. New HW: Punnett Square WS

  5. Thu 3/13 No Response Page Today. Take a few minutes to update your Table of Contents. New Stuff beginning today! Standard S7L3. Students will recognize how biological traits are passed on to successive generations. Today in Science ! Balderdash Retest in 6th and 7th Turn in the following: Sponge Bob Genetics -25% Due tomorrow for 100% Punnett Square WS NB# 15 DNA vs RNA NB# 14

  6. Meiosis Notes You will not copy all the slides, I will let you know what to write. Part of these notes will be your own summary

  7. Write this ! Karyotype- A picture of chromosomes in mitosis arranged according to homologous pairs. Humans have 23 pairs or a total of 46 chromosomes. Autosomes are chromosomes 1-22 the non-sex chromosomes

  8. This is a karyotype of a human female’s chromosomes. How can you tell that these are from a female?

  9. Describe what a karyotype looks like? Add this All boys have X Y All Girls have X X

  10. Chromosomes are easiest to see in this structure during metaphase when they are being copied. What you actually see is a double set of chromosomes that are about to split, totaling 92 chromosomes. After cell division each daughter cell will have 46 chromosomes.

  11. Cell Division by mitosis- All body cells are copied by this process- The new cells have a FULL set of genetic information- same number of chromosomes Cell Division by Meiosis- Only sex cells are created this way- The new cells will have a HALF set of genetic information. Half the number of chromsomes.

  12. Fertilization- the joining of sperm (a haploid cell) and egg (a haploid cell).

  13. The newly fertilized cell (or zygote) will contain a full set of genetic information (diploid cell) and will then grow into more cells through the process of mitosis.

  14. Segments of DNA that control an organisms characteristics are called genes. Parents contribute one allele each to their offspring for every gene (20,000 diff genes). About 1200 nucleotides make up one gene.

  15. Each of the chromosomes pictured here were contributed from a different parent. One parent’s allele for flower color is purple and the other parent’s allele for flower color is white. Alleles are different versions of the same gene.

  16. How are genes and alleles different? A gene is a section of DNA that codes for one trait. There are normally two alleles for each trait. Ex there is a gene for freckles and an alleles for freckles F or an allele for no freckles f. Complete the following chart using the textt book.

  17. Who is a Harry Potter fan? • http://www.slideserve.com/presentation/4747/Harry-Potter-Genetics-Powerpoint--Fun • This is the Harry Potter power point that we watched Monday or Tuesday.

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