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
wariber [46]
3 years ago
11

The first strands of DNA were observed through which microscope?

Biology
1 answer:
Makovka662 [10]3 years ago
6 0

Answer:

the electron microscope

Explanation:

The first strands of DNA were observed through the electron microscope.

You might be interested in
In humans, the allele for dimples (D) is dominant to the allele for no dimples (d). At another gene locus, the allele for broad
Inga [223]

Answer:

<h2>1. DdBb</h2><h2>2. ddBb</h2><h2>3. DB, Db, dB and db.</h2><h2>4.  dB and db.</h2><h2>5 50% or 1/2</h2><h2>6. 1/8 </h2>

Explanation:

As given, Allele for dimples(D) is dominant over alleles for no dimples (d), so D  is dominant over d.

Allele for broad eyebrows (B) is dominant over allele for slender eyebrows (b), so B is dominant over b.

A man heterozygous for both traits ( DdBb) marries a women who has no dimple and heterozygous fro eyebrow (ddBb)

So cross is =  DdBb × ddBb

1). Genotype of the man is DdBb.

2). Genotype of the woman is ddBb.

3). Genotype of the gametes produced by the man are DB, Db, dB and db.

4). Genotype of the gametes produced by the woman are dB and db.

5). Probability that their first child will have dimples 50% or 1/2

6). Probability that there first child will have both dimples as well as slender eyebrows 1/8

6 0
3 years ago
Agriculture led to an increase in the size of the human population. Which of the following was the most important impact of agri
klemol [59]

Answer:

The answer is the first option.

Explanation:

Farming emerged because being a nomad was no longer suitable for increasing population size. Farming allowed people to stay in one place and properly feed their families, which was a definite positive impact on population size.

8 0
3 years ago
Carbon cycle pls help me
insens350 [35]

carbon dioxide Coronavirus

4 0
3 years ago
Which is a likely result of using compulsive exercise to deal with stress?
Marina CMI [18]
The likely results of using compulsive exercise to deal with stress are <span>fatigue and diminished performance. Since the exercise was compulsive and not based on one's own decision, the exercises done would be a burden rather than something that will relieve stress. Moreover, the compulsive exercises will only lead to the person's exhaustion and reduced productivity. </span>
6 0
3 years ago
How do mutations contribute to genetic variation?
ioda
When a mutation has an effect that helps a species adapt to an environment, and specimens of both genders have it, it will end up taking over, causing evolution to gradually happen.
4 0
3 years ago
Other questions:
  • Using the terms DNA, trait, code, pattern, gene, describe why each organism is unique
    15·1 answer
  • You transcribed DNA to make and built a sequence of amino acids through
    7·2 answers
  • describe another application outside of electronics where it would be important foe something to flow in only one direction.
    14·1 answer
  • how do the membrane-bound organelles of a eukaryotic cell act in a manner similar to the organs in a multicellular organism?
    14·2 answers
  • How do objects keep their orbits in space?
    10·2 answers
  • What are the functions of lipids?
    8·1 answer
  • Erwin chargaff discovered that the dna of any species contains equal amounts of adenine and thymine, and also equal amounts of c
    12·1 answer
  • In holly trees, red fruit (R) are dominant to white fruit (c), and spiny leaves (L) are dominant to smooth leaves (1).
    8·1 answer
  • For people who know about genetics a little.
    14·1 answer
  • What are the defining characteristics of amphibians?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!