Leg length is polymorphic within a population of lizards, with much of the variation controlled by (segregating for alleles A/B). Homozygous BB lizards have short legs and move slowly, and so are easy prey to hawks. As a result, only 20% of them survive to reproduce. Homozygous AA individuals are fast but struggle to hold onto branches during hurricanes, and so only 50% of them survive to reproduce. AB heterozygotes are both relatively fast and can grip branches well. 80% of them survive to reproduce. The frequency (q) of the B allele at birth is 10%. Calculatehe absolute mean fitness of the population using the mean fitness formula.

Hello Heliodors! (cont.) Trait B Heliodors are either red (R), yellow (Y) or an intermediate phenotype, orange.   What is the expected genotypic ratio of the offspring of two orange heliodors? 2 homozygous red: 2 homozygous yellow 1 red: 2 orange: 1 yellow All orange 1 homozygous red: 1 homozygous yellow: 2 heterozygous Answer not given Previous QuestionPreviousNext QuestionNext

Based on the information shown in the chart above, what is the most likely inheritance pattern for the 'forked bristles' trait? why?

Wild type fruit flies have red eyes and normal wings. You crossed a male from a pure-breeding, purple-eyed, broken-winged line of fruit flies to a female from a pure-breeding, red-eyed, normal-winged line of fruit flies. All the F1 progeny were wild type. The reciprocal cross gave the same result. The F1 flies from the first cross were mated to produce an F2 population. If there were 528 flies in the F2 population how many would be purple-eyed and normal winged? 396 264 297 99 352

Consider the following three point trihybrid testcross ibvolving traits in dragons. The genotypes determining the 8 progeny types from this testxross are shown below out of a sample of 1572 flies. What number of progeny for each genotype would you predict in the case of independent assortment. gametes number K L M  621 klm    608  k L M  103 K lm    109  K lm    64 k L m    57 K L m    3 k l M   7

In frost moths, two alleles of one gene determine the character difference of spotted versus striped wings and two alleles of a separate, independent gene determine the character difference of orange wing background versus white wing background. The results for four matings of moth phenotypes are shown below.     Number of progeny Mating Parental Phenotypes Spotted/orange Spotted/white Striped /orange Striped  /white 1 spotted/orange x striped/orange 623 0 637 0 2 spotted/white x striped/orange 0 0 0 712 3 spotted/white x striped/orange 122 131 128 133 4 spotted/orange x striped/white 0 0 430 422 striped= S(dominant) spotted=s (recessive) white= W(dominant) orange=w (recessive)   What are the genotypes of each parent in each cross?  If more than one genotype is possible, list the alternative possibilities.  (Remember that each mating involves a separate set of parents, so the 4 matings involve 8 separate…

In the species Chinchilla chinchilla, Neotropical crepuscular rodent of the parvorder Caviomorpha, a mating between a homozygous long-tailed chinchilla male and a homozygous short chinchilla female will produce all medium length tail chinchilla offspring. When these medium length tail chinchilla offspring F₁ are mated, their offspring consists of 3 tail-less chinchillas, 24 long-tailed chinchillas, 120 medium-length tailed chinchillas, and 15 short-tailed chinchillas. What genetic interaction may be occurring in this population? Please explain

Two different house Flys were crossbreed for 2 generations. The female was a wild fly and the male was a mutant with apterous wings and a black body. Given the data of the second generation: is this data consistent with the expected 9:3:3:1 ratio expected of a dihybrid cross?

With regard to heterosis, is each of the following statements consistent with the dominance hypothesis, the overdominance hypothesis, or both? A. Strains that have been highly inbred have become monomorphicfor one or more recessive alleles that are somewhat detrimentalto the organism.                                                                                              B. Hybrid vigor occurs because highly inbred strains are monomorphicfor many genes, whereas hybrids are more likely to beheterozygous for those same genes.C. If a gene exists in two alleles, hybrids are more vigorousbecause heterozygosity for the gene is more beneficial thanhomozygosity of either allele.

please answer all parts