Answer/Explanation:
Red/green colorblindness is a recessive, X-linked condition. That means that the affected gene is on the X chromosome, and that the phenotype will only be present if there is no "healthy" gene, which is dominant to the mutated gene.
For two unaffected people to have an affected son, the mother must be a carrier. Remember, females have two X chromosomes and males have one. So if a female is a carrier of the colorblindness mutation, she will have one copy of the mutation and one normal copy of the gene, and will therefore be unaffected.
The punnet square (attached) shows that all their female children would be unaffected (have the B gene), but 1:2 male children would be colorblind, as their only copy of the gene is mutated (b).
Answer:
a. 500
Explanation:
The effective size of a given population is calculated by simply counting the total amount of organisms that actually are in conditions of reproduce and produce certain offspring in the next generation. In this particular case, althugh the population is formed by a total of 1000 individuals, only 500 organisms are capable of reproduce at that particular instant, and therefore contribute with offspring to the next generation.
Sex-linked trait, to remember hemophilia is passed on through the X chromosome which is why males are more susceptible to sex-linked traits because they only have 1 X chromosome and women have 2
Here is the order:
Sun, grass, grasshopper, frog, snake, and hawk.
I hope this helps!
~cupcake
He would have to stage an experiment. Use some pots with regular soil as well as some pots with miracle grow. Plant the same kind of plants and let them grow under the same light and wetness conditions.
after a pre set time like a week or two for example. He then would check on the plants to see if the specimens in miracle grow soil did in fact grow faster.
The answer is YES. I did that experiment this year in school :)