Answer:
here are two alleles for freckles describes the presence of freckle in one of the sibling.
Explanation:
Freckles are the dominant trait in the human.
There are two alleles for a gene on the homologous chromosome responsible for the trait to be with freckle or no freckles.
In the situation when one child can have and other does not have freckle it shows that parent are heterozygous for the freckle gene.
In heterozygous form one allele will be of dominant and other is of recessive nature.
The cross between the heterozygous parents is shown as:
F f
F FF Ff F is freckle f= no freckle
f Ff ff
From the punnet square it can bee seen that there is 25% chance of no freckle in a sibling when both the parents have freckle.
Other chance is if one of the parent is heterozygous and dominant and the other parent is recessive. From the punnet square
F f
f Ff ff
f Ff ff In this case 50% chance of no freckles in offspring.
So in either case chance of no freckled child is there.
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Answer:
The validity of data, claims, hypotheses, and observations.
Explanation:
Scientific objectivity, free from personal bias & socially desirable norms : is very important for developing a valid scientific argument.
So, before developing an argument, scientists need to look at : The validity of data, claims, hypotheses, and observations. Their opinion and personal views, the arguments that make the most sense for society - are not needed to be looked upon here . However, The arguments of famous people on the topic can also serve as a good preliminary literature base for developing an argument
Humans adapt after prolonged exposure to a constant stimulus because we detect the potentially important changes. It is also because we tend to be curious about the things that are happening around us which we try to adapt and adjust.