A branching interconnected diagram that shows the relationships and traits of members of a family is called a... Genealogy   Pedigree   Ancestor Tree   Genetic Phenotype Line   Assuming only two eye colors exist in a salamander population--red and black. Individuals with black eyes have at least one copy of allele "B", and individuals with red eyes have two copies of the allele "b". In this scenario:     The "B" allele is dominant to the "b" allele.   The "b" allele is codominant to the "B" allele   The "B" and "b" alleles are incompletely dominant to each other   The "B" allele is recessive to the "b" allele   A diploid cell may have two different ________________ of the same ______________.   genes...alleles   alleles...genes   chromosomes...parent   parents...chromosome   After fertilization, the fertilized egg cell contains pairs of chromosomes that are called ___________________________ since they contain essentially the same genes in the same order.   homologous   analogous   diploid   haploid

A very large population of rabbits has been allowed to breed randomly in a laboratory research program. The rabbits vary in their coat colour, which is either gray or black. After many generations, 25% of the rabbits display a recessive phenotype for gray coat colour (aa), the same percentage as at the beginning of the breeding program. The other 75% of the rabbits show the dominant black coat phenotype, with heterozygotes (Aa) indistinguishable from the homozygous dominants (AA) What is a reasonable conclusion explaining the fact that the frequency of the recessive trait (aa) has not changed over time? a. There has been sexual selection favouring allele a b. The two phenotypes have about equal fitness under laboratory conditions C. The population is undergoing genetic drift d. The genotype AA is lethal

Parent Generation BB BB Bb Bb Bb Bb Bb Bb bb bb Rabbits with the brown coat color allele (B) are dominant over rabbits with the white coat color allele (b). A small population of rabbits (Parent Generation) has 2 individuals homozygous for B, 6 individuals that are heterozygous, and 2 individuals homozygous for b. What would you predict the frequencies of alleles B and b to be in the next (first) generation if this population is not evolving Edit View Insert Format Tools Table

In the hypothetical Spring Songbird, golden (G) is a Z-linked gene that controls wing color. The wild-type allele (G+), which codes for orange feathers, is completely dominant to the mutant allele (G), which codes for golden feathers. A male Spring Songbird with orange feathers could have which of the following genotypes?  Z(G+) Z(G)  ZIG+) W  Z(G) Z(G)  more than one of the answers listed here is correct  ZIG) W  Z(G+) Z(G+)

In Drosophila melanogaster, wing shape is an autosomal trait. Vestigal wing is recessive (v) to the dominant trait for the normal long wings (V). In a mainland source population, the allele frequency of v is 0.02 . A small, experimental population of 100 flies was introduced on an island and had 20 flies with vestigal wings and 40 heterozygotes. What are the allele frequencies of V and v in this introduced population? What proportion (%) of heterozygotes and homozygous recessive flies would you expect to see after a few generations of mating on this island? What phenomenon of population genetics does this experiment demonstrate? p+q=1, p^2+ 2pq + q^2 = 1

Albinism is a recessive trait in humans . A geneticist studies a series of families in which both parents havenormal pigmentation and at least one child has albinism. The geneticist reasons that both parents in these families must be heterozygotes and that albinism should appear in 14 of their children. To his surprise, the geneticist finds that the frequency of albinism among the children of these families is significantly greater than 14. Can you think of an explanation for the higher-than-expected frequency of albinism among these families?

In the red backed vole (a small mouse-like mammal) there are two traits under investigation.  The first trait is a distinct tuft of long hairs at the tip of the tail with a tufted tail being recessive to non-tufted tail.  The letter T is used to represent the tail tuft gene.  The second trait is a patch of red fur on the head which is known to be recessive to the more common lack of a red patch.  The letter R is used to represent this trait.  A female to be used in the cross was drawn from a pure breeding line that consistently has both the red patch on the head and a tufted tail.  The female is to be crossed with a male from a highly variable wild population.  The male used had no red head patch and a normal (untufted) tail.  The results were as follows:  7 red head patch with tail tuft, 8 no red head patch with tail tuft, 8 red head patch without tail tuft, 8 no red head patch without tail tuft.  What would the results be if the male was crossed with a female that was known to be…

A mouse strain that has undergone inbreeding for many generations (e.b. >1000 generations) will be which of the following: O homozygous for recessive alleles at every locus O homozygous for dominant alleles at every locus O have a dominant allele at each locus, but does not have to be homozygous O may have a combination of heterozygous and homozygous loci O a mixture of dominant and recessive homozygous genotypes