1 / 8

BREEDING CORN PLANTS PART 1

BREEDING CORN PLANTS PART 1. PLEASE READ THE FIRST TWO PARAGRAPHS IN YOUR WORKSHEET. BREEDING CORN PLANTS - PART 1. Purebred Purple. Purebred Yellow. A purebred purple colored corn plant is crossed with a purebred yellow colored corn plant.

judson
Télécharger la présentation

BREEDING CORN PLANTS PART 1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. BREEDING CORN PLANTS PART 1 PLEASE READ THE FIRST TWO PARAGRAPHS IN YOUR WORKSHEET

  2. BREEDING CORN PLANTS - PART 1 Purebred Purple Purebred Yellow A purebred purple colored corn plant is crossed with a purebred yellow colored corn plant. These lines represent the corn making baby corn, but not the baby corn that is served in some restaurants ______ Purple Hybrid What do we call an offspring of purebred parents?

  3. dominant BREEDING CORN PLANTS - PART 1 recessive dominant heterozygous/hybrid Purple The purple gene must be _________ and the yellow gene must be _________ if all of the resulting offspring are purple. That means that the purple offspring show the _________ form, so they are known as __________________. What color corn kernels result from the following crosses? A. Heterozygous Purple X Homozygous Purple=_____________ B. Heterozygous Purple X Homozygous Yellow=____________ C. Heterozygous Purple X Heterozygous Purple=____________ Both Both

  4. BREEDING CORN PLANTS - PART 1 Thanks to the magic of technology, counting is easy When you count your corn please take your time and get it right so you have good data You will be using a marker to tally the ones you’ve counted while your partner fills in the table # Purple # Yellow Ratio Corn Ear A

  5. BREEDING CORN PLANTS - PART 1 Thanks to the magic of technology, counting is easy When you count your corn please take your time and get it right so you have good data You will be using a marker to tally the ones you’ve counted while your partner fills in the table # Purple # Yellow Ratio Corn Ear A

  6. BREEDING CORN PLANTS - PART 1 To calculate the ratio we divide the biggest number by the smallest number 112/110 = 1.02 so after rounding we get 1 Ratio is about 1 : 1 # Purple # Yellow Ratio 112 : 110 Corn Ear A 112 110 or 1 : 1

  7. BREEDING CORN PLANTS - PART 1 3:1 Pp Pp 2. Based on the results Table 1, what is the phenotype ratio of Corn B? _______ Recall from Mendel’s work that he got a 3:1 ratio after breeding his F1 generations with each other. 3. To get a 3:1 ratio, we need parents that are ____X ____ A. Use those genotypes to complete the Punnett square B-C. What are the genotype and phenotype ratios? G=____ : ____ : ____ P= __________ : ___________ From Table 1, how many total kernels were in Corn B? ______ 6. We need to use math to calculate the predicted results 7. The total number of offspring is 228. If 75% (3/4) is purple, than we should multiply 228 X _____ (75%) = _____ 8. Use the same formula to calculate the yellow kernels 1 PP 2 Pp 1 pp 3 Purple 1 Yellow 228 .75 171

  8. BREEDING CORN PLANTS - PART 1 PP Pp pp PP Pp pp 4 PR 9. Which crop will produce an all yellow crop the soonest? 10. Using Mendel’s Law of Independent Assortment and the possible genotypes in Corn A (____ ____ ____) & possible genotype in B (____ ____ ____). 11. Use the FOIL method to get the ____ different gametes for the genotype PpRr First = Outer = Inner = Last = Pr pR pr

More Related