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Find the length of the horizontal and vertical sides by subtracting the x and y values. Then follow the steps for using the Pythagorean theorem to find the length of the unknown side. Remember to use the points on each end of the line segment to find the length of the horizontal and vertical sides.
Influence of environment:<span> Environment can play several roles in influencing the expression of some genes. In hip dysplasia, for instance, environment can influence how dysplastic a dog becomes. A dog cannot become dysplastic unless it has a majority of "bad" hip genes. However, when a dog does have a majority of bad genes, and it is kept overweight or allowed to grow too fast, or is exercised too much or too little, that dog will end up with a worse case of hip dysplasia than it otherwise would have had.</span>
Answer:
A) Allele symbol: C/c
B) Wild-type: there are two options: Cc is 3 cotyledons are recessive, and cc if 3 cotyledons are dominant.
Explanation:
According to this example, the mutant plant with three cotyledons was crossed with a wild-type one. There were 298 wild-type plants and 302 mutants (three cotyledons). This means a 1:1 ratio.
So, to obtain a 1:1 ratio, one parent should be heterozygous and the other one should be homozygous recessive. As parents are phenotypically different, this trait can be recessive or dominant, but in both cases, one parent has to be heterozygous. If it is assumed that the trait is recessive, the mutant plant would be cc, and wild-type would be Cc. Another option is that the trait will be dominant, in this case, the mutant plant would be Cc and wild-type would be cc.
To know is the trait is dominant or recessive is necessary to make a new cross between the mutant plants of this F1.
In the attached Punnett Square is showed the two possible crosses.
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