Palomino horses have a golden yellow coat, chestnut horses have a brown coat and cremello horses have an almost white coat. A series of crosses between the 3 different types of horses produced the following offspring: Cross Offspring Palomino x palomino 13 Palomino, 6 chestnut, 5 cremello Chestnut x chestnut 16 chestnut Cremello x cremello 13 cremello 8 palomino, 9 chestnut 11 palomino, 11 cremello 23 palomino Palomino x chestnut Palomino x cremello Chestnut x cremello B) Assign symbols for the alleles that determine these phenotypes, and list the GENOTYPES of all the parents and offspring given in the table above.

In Figure 2-19, assume that the pedigree is for mice, inwhich any chosen cross can be made. If you bred IV-1with IV-3, what is the probability that the first baby willshow the recessive phenotype?

Using the following information perform following crosses using the forked line and predict all possible phenotypes types of the offspring. List the number and description of the phenotypes of the offspring. 1. aa BB Cc Dd Ee X aa bb Cc Dd EE 2. Ff Rr Gg dd Bb X Ff RR Gg Dd Bb 3. Dd gg JJ bb Hh Ee X DD GG Jj Bb Hh Ee

In domestic chickens, feather color is inherited as an incompletely dominant trait.  Feather color is inherited as:  BB= Black          Bb= Speckled              bb= White What are the predicted phenotypes and their frequencies for each of the following crosses?  A. BB rooster x white hen         Black         ___________                 Speckled ___________ White       ___________   B. Speckled rooster x speckled hen         Black         ___________  Speckled ___________ White       ___________     C. Speckled rooster x white hen         Black         ___________  Speckled ___________ White       ___________

Complete the Punnett Squares for each of the following crosses and fill out the possible % for the offspring. 10. If the woman is type AB and the father is heterozygous for type B. % AB % A % B

Pigeons display a high color variety, here we try to understand the genetic basis of mixed red & black stippling of the feathers (kitey) and their genetic relation to black and red feather color. We conducted the following crosses: Cross Offspring kitey x kitey 16 kitey 5 black 3 red kitey x black 6 kitey 7 black red x kitey 18 red 9 kitey 6 black   Have a look at the cross results and develop a hypothesis to explain the inheritance of kitey, black and red feather color in pigeons (Hint: assume that 2 loci are involved and some type of epistasis occurs) QUESTION: 1. provide hypothesis                     2.  provide the hypothetical genotypes for each crossing

*Ms. Libby Davison bought three Congo Lily bulbs at a flower show after she was told they were each from different inbred lines. One had red flowers, on yellow flowers, and one white flowers. She determined that flower color was controlled by three alleles at a single gene. Red was found to be codominant with yellow, and both alleles dominant to white. Some of the crosses she made and the resulting progeny are listed below: Progeny All red Cross Red (selfed) Yellow (selfed) White (selfed) Red x yellow Yellow x white Red x white Orange (selfed) 1 red: 2 orange: 1 yellow a. Designate each allele with an appropriate gene symbol. All yellow All white All orange All yellow All red b. Identify all possible genotypes of the following phenotypes i. Red ii. Yellow Taken from Introduction to genetic analysis 7 edition. 1999. Griffiths et al. Chapter 4. iii. White iv. Orange c. Determine the expected phenotypes and their ratios in the progeny from each of the following crosses. i. Orange x white…