- Chapter 12 Digging Deeper Conceptual Learning Activity Back To Assignment Attempts 7 Crossing Over Crossing Over Is An 1 (64.53 KiB) Viewed 22 times
- Chapter 12 Digging Deeper Conceptual Learning Activity Back To Assignment Attempts 7 Crossing Over Crossing Over Is An 2 (53.24 KiB) Viewed 22 times
1.) exchanges alleles
duplicates chromosomes
combines sister chromatids
2.) four, two, or three
3.) did not or did
4.) two, three, or four
5.) did not or did
Chapter 12 Digging Deeper: Conceptual Learning Activity Back to Assignment Attempts 7. Crossing over Crossing over is an event that occurs only in meiosis, and it occurs before the first split during prophase I. In essence, two homologous chromosomes twist around one another and exchange an identically sized segment of their DNA. Crossing over which helps to increase variation. The following graphic illustrates how crossing over occurs between two chromosomes and how it rearranges the pattern of alleles on the chromosomes. Average/3 Blonde hair -1-1 At the end of meiosis, each of these four chromosomes will be in a diffent gamete cell, and each gamete cell will contain a pair of these alleles from the chromosomes labeled at the left side of on one chromosome. The following tables list two possible groups of gametes that could resu the image. Each line lists the pair of alleles that is present in each gamete. One group of gametes is the result of chromosomes that had a crossing-over event, and the other group of gametes is the result of chromosomes that did not have a crossing-over event. Analyze each group and then select the correct answers to complete the paragraphs that follow. Green eyes Possible Gametes: Group 1 Green eyes Brown eyes POLYAMINA Gran BUSC Blonde hair Black hair Black hair Black hair 0 X Brown eyes
Chapter 12 Digging Deeper: Conceptual Learning Activity At the end of meiosis, each of these four chromosomes will be in a different gamete cell, and each gamete cell will contain a pair of these alleles on one chromosome. The following tables list two possible groups of gametes that could result from the chromosomes labeled at the left side of the image. Each line lists the pair of alleles that is present in each gamete. One group of gametes is the result of chromosomes that had a crossing-over event, and the other group of gametes is the result of chromosomes that did not have a crossing-over event. Analyze each group and then select the correct answers to complete the paragraphs that follow. Possible Gametes: Group 1 Green eyes Blonde hair Brown eyes Black hair Green eyes Black hair Brown eyes Blonde hair This group of possible gametes has 3 occur. Possible Gametes: Group 2 Green eyes Blonde hair. Brown eyes Black hair Green eyes Blonde hair - Brown eyes Black hair This group of possible gametes has occur. น. 4 different combinations of the hair and eye color alleles. In this group of gametes, crossing over different combinations of the hair and eye color alleles. In this group of gametes, crossing over Pe Grade It Now Save & Continue Continue without saving X