Question

4. One of Tables 2 and 3 represents population structures that demonstrate potential microevolution at the locus in question, while the other table represents population structures that are not evolving at the locus in question. Which is which? Explain your reasoning. RESPONSE:

Answer 1

This is a question of monohybrid cross with exception to Mendelian inheritance. According to Mendel's law of inheritance, F2 monohybrid cross result in genotypic ratio of 1:2:1 (BB:Bb:bb) {see attached image} and phenotypic ratio of 3:1 (dominant:recessive). But in both the tables, this condition is not met. Thus it becomes exception to Mendelian inheritance.  

Table 3 is the case of lethal inheritance

Table 2 doesn't meet any criteria of microevolution

2003 PRIORITY ovember 26 Table 3 IDNESDAY This is a question of monohybrid cross. Suppose 'B' - dominant allele t recessive Bb pairs Bbbairs bb bairs and 18 32:18 1.7211 19 22 28:22 1.2761 27 18 32 18 17:10 19 28:22 27 27 11:27:1 132.18 11.761 PRIORITY 3 of the crosses result in a ratio of 2 : this ratio is of lethal 2 inheritance . 27 One genotype dies in the embinganic TASDAY Stage. Result in survival of only - 2 genotypes in the ratio of 2:1 Punnett square monohybrid cross BI b hentype I Phenotype B BB/Bb BB = 1 2 Ablot bb Bb = 2 2 2 7 bb = 12 16 WEMBER W T F S 5 12 19 26 6 7 8 13 14 15 20 21 22 27 28 29 REDMI NOTE 5 PRO MI DUAL CAMERA