SCIENCE TEST ON GENETICS NEED HELP?

D

David L

New member
1. In pigs the gene for long tails (l) is recessive to the gene for short tails (L). when short tailed female was mated with a long tailed male, the offspring included 5 short tailed and 3 long. The genotypes of the parents must be what?

2. The petunia plant can have white, red and pink flowers, What type of dominance is this showing?

3. what is continuous variation, Give and example in humans

4. What controls the sex of the child mum or dad? why?

5. What is an example of an x linked human condtion? what does this mean?


who answers all 5 with good answer will get 10 points or whoever can answer the most

thanxz :)
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2. co-dominance
4. dad because they have the X and Y chromosome. the mom only have an X chromosome (girl= XX boy=XY)

1. the female pig has two recessive gene and the male pig has one dominant gene and one recessive gene
 
1. Ll and ll, i think. [only 90% sure on this one]

2. codominance

3. multiple alleles contribute to a certain trait; height

4. dad; mom can only give an X chromosome, dad can give either X or Y

5. colorblindness, this means that males are more likely to have a certain x-linked condition than females because they only have one X chromosome; the allele for a certain trait (or in most cases, a disease) is carried on the X chromosome.

sorry my answers are so brief, but i hope this suffices.
:]
 
2. ther Co-dominance, where different parts of the organism display the different alleles (i.e. red and white flowers), or a combination of the two alleles (i.e. red and white alleles make pink flowers)
4 dad he has it i cant remember
 
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