Answer:
bright blue trait = recessive
yellow trait = dominant
Explanation:
let the letter B represent the gene for skin colour.
This means that the dominant gene is 'B' while the recessive gene is 'b'
A dominant gene is one that is exhibited phenotypically in the presence of both gene variants (heter0zygous state - Bb) while a recessive gene is only expressed phenotypically when it is in a h0m0zygous state (bb)
In order to find out the genotype of the parents, let us consider each cross one after the other.
1. A bright blue female and a bright blue male produce all blue progeny.
2. A yellow female and a yellow male produce a mix of both bright blue and yellow progeny
From statement 2, it can be deduced that the trait for yellow colour is dominant because a cross of the parents exhibiting this trait produces bright blue offsprings too, meaning that the genetic composition of the parents contains the gene that codes for yellow colour. Since these parents show a yellow colour in a heterozygous state, then the trait for yellow colour is dominant.
Therefore, the genotypes of the parents in each case include:
1. A bright blue female and a bright blue male produce all blue progeny. (bb × bb)
2. A yellow female and a yellow male produce a mix of both bright blue and yellow progeny (Bb × Bb)
Answer:
A permanent change in the genetic composition of an organism
Explanation:
The experiment carried out by Frederick Griffith shows that bacteria are capable of transferring genetic information by means of a process called transformation.
Let me help you here :)
Start by presenting yourself, your name, where you from, etc. Then you can explain why is it important to complete all your assignments and study to get good grades... You can also talk about how High School will reflect in your future and applications for colleges. In your story write how important is to always pay attention in class and listen to your teacher.
Hope this helps!!
Answer:
creation of Okazaki fragments.
Explanation:
Replication of the lagging strand of DNA is discontinuous due to the antiparallel polarity of the two strands of DNA and the ability of DNA polymerase to replicate DNA in 5' to 3' direction only. The problem of synthesis of DNA in 5’ to 3’ direction on both template strands is solved by the synthesis of the short DNA segments at a small distance on one of the template DNA strands. These small fragments that are formed are called Okazaki Fragments and joined together by DNA ligase to form the lagging strands in DNA replication. Each of the Okazaki fragment is 100-1000 nucleotides long.
It is a natural process that occurs during DNA replication and therefore, does not include any molecular technique.
The term "unzipping" in the DNA replication refers to the breaking of the hydrogen bonds.
<span>In the process of DNA replication, DNA helicases
disentangle DNA at positions known as origins where synthesis will be
initiated. DNA helicases continue to uncoil the DNA creating a structure called replication fork
as they unzipped apart. The process of breaking the hydrogen bonds between the
nucleotide base pairs in double-stranded DNA needs energy. Helicases require
energy stored in an ATP molecule to break the bonds. </span>
