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
ser-zykov [4K]
3 years ago
8

Please help i am giving away brainiliest

Biology
1 answer:
Vsevolod [243]3 years ago
6 0

Answer:

A

Explanation:

Natural selection occurs when an environment makes organisms with certain traits more likely to survive and reproduce.

Asexual reproduction results in no genetic variation (meaning differences in traits, also called divserity). Genetic variation must be present for certain organisms to be better suited to their environment, because in its absence all organisms share the same traits. This rules out B, C, and D. I hope this helps :)

You might be interested in
The y-shaped site at which a double-stranded molecule of dna is separated into two single strands for replication.
aleksandrvk [35]

The Y shaped structure with active region present is called replication fork

The separation of the 2 single strands of DNA creates a ‘Y’ form referred to as a replication ‘fork’. the 2 separated strands will act as templates for making the new strands of DNA.

LEADING STRAND

one of the strands is oriented in the 3’ to 5’ path (toward the replication fork), this is the main strand?. the other strand is oriented inside the 5’ to 3’ direction (away from the replication fork), that is the lagging strand?.

because of their extraordinary orientations, the 2 strands are replicated in a different way: A small piece of RNA called a primer (produced by means of an enzyme referred to as primase) comes along and binds to the end of the leading strand. The primer acts as the place to begin for DNA synthesis.

DNA polymerase? binds to the leading strand after which ‘walks’ alongside it, including new complementary? nucleotide? bases (A, C, G and T) to the strand of DNA within the 5’ to 3’ direction.

This form of replication is referred to as continuous

LAGGING STRAND

Several RNA primers are made by means of the primase enzyme and bind at numerous points alongside the lagging strand.

Chunks of DNA, known as Okazaki fragments, are then introduced to the lagging strand also in the five’ to a few’ path.

This sort of replication is known as discontinuous as the Okazaki fragments will want to be joined up later.

Once all the bases are matched up (A with T, C with G), an enzyme referred to as exonuclease strips away the primer(s). The gaps wherein the primer(s) were are then filled by but extra complementary nucleotides.

The brand new strand is proofread to make sure there are no errors inside the new DNA series.

eventually, an enzyme referred to as DNA ligase? seals up the sequence of DNA into two non-stop double strands.

The end result of DNA replication is two DNA molecules consisting of 1 new and one old chain of nucleotides. That is why DNA replication is described as semi-conservative, 1/2 of the chain is part of the unique DNA molecule, half is ultra-modern.

Following replication the brand new DNA routinely finishes up into a double helix.

To know more about DNA replication click here

brainly.com/question/21265857

#SPJ4

7 0
1 year ago
The article "Human Impact on the Galapagos Islands" and the video "Long Line Fishing Threatens Wildlife of the Galapagos Islands
Margaret [11]

Answer:

sea lions, sharks, sea birds, albatross

Explanation:

I got the answers from the assignment

8 0
3 years ago
Read 2 more answers
Parasitism is a relationship between two organisms of different species in which one organism (the parasite) obtains resources,
sattari [20]
Tick and dog 
fungus and tree 
lice and scalp 
5 0
3 years ago
What is the phenotype ratio for this cross ?
Dmitrij [34]

Answer: 2 Heterozygous Tall and 2 homozygous short.

Explanation:

5 0
3 years ago
Read 2 more answers
Which statement best describes the relationship between plants and oxygen? Plants do not need oxygen because they use carbon dio
skad [1K]

Answer:

Plants produce oxygen during photosynthesis, and they also need oxygen gas from the air for cellular respiration

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • 4. Most enzymes have the ending of?
    5·2 answers
  • What distance was used to define the astronomical unit (AU)?
    13·1 answer
  • If height was a complete dominant trait and being tall was represented by ( T ) and being short was represented by ( t ), the mo
    11·1 answer
  • Fish meal is better than artificial fertilizers. How could this statement be revised to make it a hypothesis?
    8·1 answer
  • WHAT PROCESS ALLOWS A SPECIES TO LIVE IN ITS NICHE?
    10·1 answer
  • ( 15 points! ASAP PLEASE ) Choose one of these two scenarios, and use the scenario to demonstrate the meaning of E = KE + PE. As
    14·1 answer
  • 4. Monosaccharides are to polysaccharides as
    5·1 answer
  • Which of the following components is NOT needed to create small organic molecules?
    13·1 answer
  • Cell theory applies to...
    7·1 answer
  • Please help i’ll give brainlist
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!