Both parents are normal. But, some of the kids have the disease. This indicates that the parents are heterozygous for the disease (let's use Dd). They are phenotypically fine because D is normal. But we know they must both carry the diseased d allele because their kids have the disease.
If you cross Dd x Dd you get DD, Dd, Dd and dd as the possible outcomes. But because each time they have a child they roll the dice as to which of the 4 above happens, they were unlucky as 3 of those times they got dd for their child...so 3 of them have the disease (and are dd). One is phenotypically normal but could still be Dd or DD.
Ticks are a type of parasite
The information of dna is actually in the form of a code where the sequence Codons <span>ultimately in different three letter sequence
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Delayed phase preference.
Its when teenagers begin to stay up later on average about 2 hours later. It is initially caused by melatonin; its a chemical that makes us sleepy but in teenage melatonin levels rise about 2 hours later than in pre-teens, so teenagers do not get sleepy. When combined with stimulus to stay awake tv, texting or surfing the web or whatever teenagers go to bed much later.
Answer:
Muscle cells and skin cells look and behave differently because their genes are being expressed differently.
Explanation:
- Genes are the sequence of nucleotide that has all the information about the functioning and characteristics of particular cells.
- All genes are actually present in our liver cell but the thing that matter is the gene is expressed differently for different type of functioning.
- So even having the same gene the cells might look different and behave different, its all about turning the gene "on" and "off".
