1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Scrat [10]
3 years ago
5

Describe the discovery of the importance of DNA including descriptions of at least two experiments

Biology
1 answer:
Annette [7]3 years ago
8 0

Explanation:

Introduction

Our modern understanding of DNA role in heredity has led to a variety of practical applications, including forensic analysis, paternity testing, and genetic screening. Thanks to these wide-ranging uses, today many people have at least a basic awareness of DNA.

It may be surprising, then, to realize that less than a century ago, even the best-educated members of the scientific community did not know that DNA was the hereditary material!

In this article, we'll look at some of the classic experiments that led to the identification of DNA as the carrier of genetic information.

Protein vs. DNA

The work of Gregor Mendel showed that traits (such as flower colors in pea plants) were not inherited directly, but rather, were specified by genes passed on from parents to offspring. The work of additional scientists around the turn of the 20th century, including Theodor Bovari, Walter Sutton, and Thomas Hunt Morgan, established that Mendel's heritable factors were most likely carried on chromosomes.

Scientists first thought that proteins, which are found in chromosomes along with DNA, would turn out to be the sought-after genetic material. Proteins were known to have diverse amino acid sequences, while DNA was thought to be a boring, repetitive polymer, due in part to an incorrect (but popular) model of its structure and composition1

start superscript, 1, end superscript.

Today, we know that DNA is not actually repetitive and can carry large amounts of information, as discussed further in the article on discovery of DNA structure. But how did scientists first come to realize that "boring" DNA might actually be the genetic material?

You might be interested in
Ozone hole refers to...?
Ulleksa [173]
I guess it is one ofA or C
8 0
3 years ago
Read 2 more answers
Autonomic nervous system reactivity in humans appears to be ____.
ollegr [7]
That is phsycogenic i know from personal experience

6 0
3 years ago
Flower color in snapdragons results from the amount of the pigment anthocyanin in the petals. Red flowers are produced by plants
USPshnik [31]

Answer:

The genotypes found in the F2 offspring will be An1An1, An1An2 and An2An2.

Explanation:

In the example given in the question, the color of the petals of snapdragon flowers are given with the An1 allele having full activity and the An2 allele being the null allele. For the F1 offspring, two snapdragon flowers are crossed, one with red petals which is An1An1 and one with ivory petals which is An2An2. All the genotypes for the F1 offspring will result in An1An2.

Then using this F1 offspring, the F2 offspring is found and the genotype of the F2 offspring will be An1An1 / An1An2 / An1An2 / An2An2.

So the genotypes found in the F2 offspring will be An1An1, An1An2 and An2An2. One red petal snapdragon, 1 ivory snapdragon and 2 pink snapdragons.

I hope this answer helps.

8 0
3 years ago
The genetic material of a virus consists of..?
NNADVOKAT [17]

Answer:

D) RNA or DNA

Explanation:

Most viruses either have RNA or DNA as their genetic material.

Have a good day everyone :)

4 0
3 years ago
Read 2 more answers
Oh no! The FBI kidnapped Mike and put him in an fMRI machine to track whether he was lying or not. According to Dr. Barrett, wha
Len [333]

The correct answer is he's screwed because with enough training in a mock scanner, the fMRI is sure to work.

The FBI kidnapped Mike and put him in an fMRI machine to track whether he was lying or not. FBI detects lies from the flow of blood. when he is lying, his brain put more efforts and more flow of blood.

fMRI detects lies according to brain activation patterns. Its brain activation patterns shoed different from the person who is innocent.

The flow of blood in activated areas helps in tracking lies using an fMRI machine. So, during the lie detection areas highlighted if a person lies.

learn more about the fMRI machine: brainly.com/question/6231239

#SPJ1

3 0
2 years ago
Other questions:
  • Pancreatic digestive juices are carried by
    6·1 answer
  • Cholesterol serves several essential functions in mammalian cells. Which of the following is not influenced by cholesterol?
    13·1 answer
  • Single strands of nucleic acids are directional, meaning that there are two different ends. What functional groups define the tw
    6·1 answer
  • What is the type of motion that exists for objects traveling in only one direction.
    9·2 answers
  • A bird species that migrated from riverbanks in South America to the northern hemisphere were responsible for pollinating a plan
    10·1 answer
  • . What is a negative impact that bioengineered plants may have on the environment?
    12·1 answer
  • Why does a egg change color and texture when heated
    15·1 answer
  • Paki andwer and thank you pooowww
    7·1 answer
  • The transcription of the information in DNA involves the pairing of the nitrogen bases of DNA with RNA nucleotides to form a mol
    15·1 answer
  • Which of the following is NOT a way that carbon is released into the atmosphere?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!