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zhenek [66]
3 years ago
10

Think about the dna coding sequence of a gene. if an a were swapped for a t, what kind of mutation could it cause and why?

Biology
1 answer:
sukhopar [10]3 years ago
8 0
If an A (Adenine) were swapped for a T (Thymine) it will lead to A TRANSVERSION TYPE OF POINT MUTATION.

Replacement of an A with a T is a transversion type of point mutation because in transversion the purine is replaced with a pyrimidine. Since in this case only one nucleotide is replaced, it is a point mutation.
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A variety of opium poppy (Papaver somniferum L.) having lacerated leaves was crossed with a variety that has normal leaves. All
Ainat [17]

Answer:

The correct answer is-

F1 -  AaBb (lacerate)

F2 - A_B_; A_bb; and aaB_ (lacerate)

     - aabb (normal)

2. Two genes, with a dominant allele at either or both loci.

Explanation:

The given information gives THE following data:

Dominant: Lancerate leaves - AABB

Recessive: normal leaves - aabb

F1 has - all Lacerated leaves - AaBb

F2 by selfing F1:

         AB               Ab         aB         ab

AB    AABB        AABb      AaBB    AaBb

Ab     AABb       AAbb      AaBb     Aabb

aB     AaBB       AaBb       aaBB     aaBb

ab     AaBb       Aabb       aaBb      aabb

Here, 15/16 = lacerate which is 0.94 which is equal to the value of lacerate given in the question - 249/265 = 0.94

And normal 1/16 = 0.062 is almost same as 16/265 = 0.060

Thus, the genotypes of -

F1 -  AaBb (lacerate)

F2 - A_B_; A_bb; and aaB_ (lacerate)

     - aabb (normal)

5 0
3 years ago
Recently, Jonesville County inhabitants have been embroiled in a controversy regarding the use of pesticides on crops grown in t
LenKa [72]

Answer:

Charles Ehler: incorrect.

Wendell Mullison: correct.

Robert Rodriguez: correct.

Judy Johnson:correct.

Explanation:

-Charles Ehler´s statement is incorrect because in order for a chemical company launch a new product it must pass several tests, that´s why products lasts years in proves, there are several tests such as the environment test that proves that the product doesn´t affect other species, or the human safety that makes sure the product doesn´t affect human health.Wendell Mulison´s statement proves to be correct with this as well.

-Robert Rodriguez´s statement  is correct because even though there are several tests that take care human healt there are just a few based on the damage pesticides produce to the land where are used.

-Judy Johnson´s statement is correct because science has proved that the resistant of parasites as being increasing with the products tat are used to combat them. Bacterias are an example of it, many drugs used against bacterias are now useless for some people because of the resistantthey have developed.

-One specie that can be taken as a pesticide can be the ground snail, that affects some plants and also may contain a parasite aclled "Hepatic fasciola" that affects sheeps and goats of farmers.

-One viable method to control pesticides is the sue of other species to control them, this specie has to be adequate to the land, for example, if a farmer wants to get rid of the ground snails because of the parasite and  the damage they do to their platings, they can introduce ducks to the farm that eat them without damaging the land with any kind of chemical product.

6 0
3 years ago
The contention that since there are cross-country or cross-cultural differences in ethical standards, it is appropriate to judge
IgorLugansk [536]

Answer:

ethical relativism

Explanation:

Based on the scenario being described within the question it can be said that this defines what is meant by ethical relativism. Since the formal definition of this term refers to a theory that beliefs that morality is relative to the norms of one's culture, meaning that the current location's culture has the right to dictate what is morally/ethically correct based on their customs.

3 0
3 years ago
Read 2 more answers
What does the "mRNA destroyer" do?
LiRa [457]

Answer:

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Explanation:

7 0
3 years ago
The Hawaiian state bird, the Nene, has an uncertain evolutionary history. It is thought that it has evolved from some other type
lana66690 [7]

Answer:

It will address the research question of what type of goose (species) does the Nene evolved from.

Explanation:

Genomics uses the whole set of an organisms DNA to study and understand its' function, structure, and evolution. Scientists will use the Nene's genome set to study its evolution,basically telling a story where it comes from.

7 0
4 years ago
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