In a particular mammal, having long whiskers is a SEX-INFLUENCED trait; in FEMALES, long whiskers is dominant to short whiskers, and in MALES, short whiskers is dominant to long whiskers. Use W for the long whiskers allele and W* for the short whiskers allele. You cross a true-breeding FEMALE with long whiskers to a true-breeding MALE with short whiskers. After intercrossing the F1 progeny, which of the following results are expected for the resulting F2 progeny? a) None of these choices b) 3/8 of the F2 progeny will be males with short whiskers. c) All of these choices d) 1/8 of the F2 progeny will be females with short whiskers. e) 3/8 of the F2 progeny will be females with long whiskers. O f) 1/8 of the F2 progeny will be males with long whiskers.

Within a mouse population, the black fur allele (B) is dominant to the white fur allele (b) and the short whisker allele (S) is dominant to the long-whisker allele (s). A heterozygous black-furred short-whiskered mouse is crossed with a homozygous white-furred long-whiskered mouse. What percentage of the offspring will be black-furred with long whiskers?

If we cross a pure red-eyed female rat with a white- eyed male rat, what is the expected ratio of male-to- female offspring from this cross (red colour is dominant over white colour, and the gene for this trait is sex-linked)? Three red-eyed males and one white-eyed female All white-eyed males and all red-eyed females All red-eyed males and all hybrid red-eyed females 50 % red-eyed females and 50% white-eyed males

If a chicken has black and white feathers, how could you describe the genes for feather color? If a plant has yellow flowers and is crossed with a plant with red flowers and the resulting offspring has orange flowers, what can you infer about this plant's genetics?

In a cross between BbTtSS and BBttSs, what is the probability of offspring being BBTtSS? Be specific on the answer

If a Rottweiler is crossed with a Labrador retriever, what will be the coat color of the offspring: solid, yellow, saddle, or bicolor?

In some dogs, barking when trailing a scent is a dominant trait. Others dogs do not bark while trailing a scent. Erect ears are dominant to drooping eats. What is the phenotypic ratio of F1 when a heterozygous erect eared silent trailer is crossed with a droopy eared barker whose mother is silent

Suppose the ear length of two populations of jerboas is controlled by one gene. To determine the mode of inheritance, a homozygous short-eared female is crossed with a homozygous long-eared male. Then, siblings from the F₁ are crossed, and the number of short- and long-eared animals are counted to determine the phenotype ratio. Match the phenotypic ratio anticipated in the offspring from a cross of two heterozygous individuals to the appropriate mode of inheritance for the short-ear allele. Mode of inheritance F1 phenotype Cross of heterozygotes 1 long : 3 short Autosomal dominant Autosomal recessive Sex-linked dominant Sex-linked recessive All short-eared 1 long : 1 short All long-eared Answer Bank All short-eared males 1 long : 1 short; females all short 3 long : 1 short Long-eared females, short-eared males

Feather colour in parakeets is controlled by two genes. Blue colour (B) is dominant over absence of colour (b). Yellow colour (Y) is dominant over absence of colour (y). When a B allele and a Y allele are present, a green parakeet is produced.The probability of obtaining a female or male parakeet is the same as for humans. A green parakeet crossed with a white parakeet produced offspring with four different colour patterns.What is the genotype of the green parakeet?  Answer

pure-breeding yellow (Y) canaries crossed with pure breeding blue (y)  canaries make green cancaries. identify the genotypic and phenotypic ratios when you cross a  green with a blue.  what type of inheritence pattern is this?