Here's the cheat-sheet below. tt nontaster (homozygous recessive): single band at 221bp TT taster (homozygous dominant): two bands (177bp and 44bp) Tt taster (heterozygous): 3 bands representing both alleles (221bp, 177bp, 44 bp) MARKER tt nontaster TT taster U D Tt taster MARKER PBR322/ U D 100 bp ladder U 1857 bp 1058 bp 383 bp 121 bp 221 bp 177 bp 44 bp primer dimer if present) This figure shows you expected results for the 3 possible genotypes. The U is for 'undigested', meaning what you see before using the restriction enzyme. The Dis for digested. Q8) In the figure above, which was the BETTER ladder to use for this experiment? PBR322/BstNI or the 100 bp ladder?
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- Repeat this process for the following genotypic frequencies for the presence or absence of mid-digital hair by a typical 1407 class: Frequency of homozygous dominants (HH, mid-digital hair present): 0.21 Frequency of heterozygous individuals (Hh, mid-digital hair present): 0.16 Frequency of homozygous recessives (hh, no mid-digital hair): 0.63 Total No. of alleles present: _____________ Number of dominant alleles possessed by homozygous dominants: _____________ Number of recessive alleles possessed by homozygous recessives: _____________ Number of dominant alleles possessed by heterozygotes: _____________ Number of recessive alleles possessed by heterozygotes: _____________ Total number of dominant alleles in the population: _____________ Frequency of the dominant allele (H) in the population: _____________ Frequency of the recessive allele (h) in the population: _____________Kernel color in wheat is controlled by 2 pairs of genes (AABB). Determine the color of the offspring with the following genotypes: (Note: 4 contributing alleles – red; 3 contributing alleles – medium red; 2 contributing alleles – intermediate red; 1 contributing allele – red; and 0 – white a. AAbb x AaBbb. AABb x Aabbc. aaBb x Aabbd. AABb x aabbe. AABb x AaBbIn garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a tall plant with white flowers produces 3/8 tall purple, 1/8 tall white, 3/8 dwarf purple, and 1/8 dwarf white. What is the genotype of the parents? a. Dd Pp x Dd pp b. DD Pp x dd pp c. DD Pp x dd Pp d. Dd Pp x Dd Pp e. Dd pp x dd Pp
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