What is the phenotype of your new dragon

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Reference no: EM131018131

Rules

Dominance and Recessive Traits

(1.) What is the chromosome number ("n") for the dragons?

(2.) Which trait(s) exhibit incomplete dominance?

(3.) What does it mean for a trait to be incompletely dominant?

(4.) No allelic combination is described as being heterozygous recessive. Why do you think this is the case?

Some Traits are Sex-linked

(5.) Which dragon trait(s) is/are sex-linked?

(6.) How do sex-linked traits differ from autosomal traits?

Color and Lethal Combinations

(7.) Describe how the inheritance of color is different from that of horns and/or wings.

(8.) On which chromosome is the lethal combination exhibited? What is the lethal combination?

Meiosis

(9.) What is the phenotype of your new dragon?

(10.) Which traits are inherited from the mother dragon? AND Which traits are inherited from the father dragon?

(11.) Were any traits expressed by the offspring that differed from either or both of the parents? If so, what were they?

(12.) How does meiosis allow for variation in offspring?

(13.) How does fertilization allow for variation in offspring?

Pedigree and Genes

Now that you know how to breed dragons, let's try some selective breeding in the pedigree view. Use the cross tool to breed a new generation of dragons; breed two of the dragons from this new (F1) generation. Repeat this at least 8 times.

(14.) What do you notice about the dragons as you continue to breed more generations?

Use the chromosome tool to closely examine the dragons' genes. If you had trouble answering the sex-linked question above, now you can observe and compare the X and Y chromosomes...

(15.) Can you find any genes that are different among the members of your F8 generation?

(16.) How many generations do you have to breed until all the dragons are exactly the same?

(17.) You are creating an inbred strain of dragons in the final generation(s) of this process. Write a note describing your strain, and explain what is "special" about all individuals in an inbred strain of organisms.

The Plates Problem

(18). Try breeding some offspring to see results of these crosses. Does the pattern of inheritance of plates tell you anything useful?

(19.) Based on your breeding experiments, where might you expect to find the gene for plates (i.e., On which chromosome might the gene be located?) Why do you think this is correct?

(20.) Dragons that grow plates usually do so quite late in their life, so dragons that have a new baby don't know right away whether or not it will grow plates. Which trait(s) exhibited by a baby might help a mother dragon determine whether her baby will grow up to have plates?

Dragon Genes
Genotypes/Phenotypes

Trait	Phenotype	Genotype
Horns	Horns
	No Horns
Wings	Wings
	No Wings
Legs	4 Legs
	2 Legs
	No Legs
Tails	Fancy Tail
	Plain Tail
Fire-breathing	Fire-breathing Male
	Non-fire-breathing Male
	Fire-breathing Female
	Non-fire-breathing Female
Color	Green Male
	Yellow Male
	Red Female
	Blue Female
	Brown Female
	Purple Female

Reference no: EM131018131

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