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
Sholpan [36]
3 years ago
5

Directional selection only occurs in response to naturally occurring events.

Biology
1 answer:
Shalnov [3]3 years ago
7 0
The answer is: False
You might be interested in
When Mendel crossed purebred purple flowering plants (PP) with purebred white flowering plants (pp), what were the flower colors
zavuch27 [327]
The answer is <span>100 percent purple
</span>
Let P be dominant allele for purple flowers and p recessive allele for white flowers. So purebred purple flower has two P alleles and its genotype is PP and purebread white flower has two p alleles and its genotype is pp. Since P is dominant over p, when found together like in heterozygous plants (Pp), the flowers will express dominant allele and will be purple.
So, a cross between <span>purebred purple flowering plants (PP) with purebred white flowering plants (pp) will have 100% of the offspring with genotype Pp and purple flower color.
</span>
Parents:               PP      x       pp
Offspring:        Pp     Pp      Pp    Pp
3 0
3 years ago
Read 2 more answers
Sea floor spreading happens in which plate boundaries?
Stolb23 [73]

Answer:

Divergent plate boundaries.

Explanation:

"As upwelling of magma continues, the plates continue to diverge, a process <u>known as seafloor spreading</u>. Samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre".

Please mark as brainliest! Thank you <3

8 0
3 years ago
Somebody knows the answer to this
KiRa [710]
Typically when we think about extreme weather, we think about the effect of weather on humans and other life forms. However, weather events also greatly impact non-living things. Freeze and thaw cycles tend to break up rocks, weathering them physically. Landscape erosion can be greatly enhanced by storms because rivers and streams are able to transport larger amounts and larger sizes of material than they otherwise would, due to faster flow velocities. Sand at beaches is carried away by strong storms until it can be replenished over time. Sediments become hydrated during rainfall events, which can result in landslides and land movement. Many of these processes can create hazards for humans, but the physical landscape is very much shaped by extreme weather events. Weather is weather, which is nonliving. Erosion is affected by weather, the more rain there is, the more erosion. The more temperatures change, the more erosion because things swell as they warm up and shrink as they cool off, which can cause them to break.


Hurricane affects come from both wind and water impacts. Wind and waves break coral, damaging it or forcing it on shore and disrupting the ocean ecosystem. Fish and benthic organisms face turbulent conditions due to waves and wind. ... Winds dislocate sea and migratory birds caught in the eye of the storm.


Some examples of non-living things include rocks, water, weather, climate, and natural events such as rockfalls or earthquakes. Living things are defined by a set of characteristics including the ability to reproduce, grow, move, breathe, adapt or respond to their environment. Extreme heat causes lakes and rivers to dry up. Some kinds of earth can also dry up so much that it gets cracked.

Extreme rainfall causes floods and landslides.

Extreme cold can cause rocks to break, when the water that leaked into cracks in the rock freezes and expands.

If I knew more about the water cycle, I might be able to tell you more about how extreme weather affects clouds and other parts of the water cycle.

4 0
3 years ago
Which of the following statements is true?
erastovalidia [21]

The answer is D.

Species diversity has been increasing through decades of years.

6 0
3 years ago
Read 2 more answers
Chiasma form during meiosis I but not during mitosis. <br> a. True <br> b. False
Goryan [66]

Answer:

True

Explanation:

Chiasma is the site of crossing over. It is an X-shaped site that appears in a tetrad (bivalent) chromosome during the diplotene stage of prophase I of meiosis I. Crossing over refers to the exchange of segments of chromatids and occurs between homologous chromosomes only. Crossing over is the event of prophase I of meiosis I and produce new gene combinations.

The homologous chromosomes are separated from each other but remain attached at chiasmata. The dissolution of chiasmata occurs by the end of prophase I and separates the homologous chromosomes completely from each other. Crossing over does not occur in mitosis. Since mitosis does not include crossing over, chiasmata are also not formed in mitosis.

4 0
3 years ago
Other questions:
  • . According to the Big Bang Theory, the universe began about ___
    8·2 answers
  • The umbilical cord connects the embryo to the
    6·2 answers
  • Which term indicates the style of reasoning that uses data to form a conclusion?
    11·1 answer
  • QUESTION PROKARYOTES EUKARYOTES VIRUSES Does it have a nucleus? Does it have membrane-bound organelles? Does it have a cell memb
    11·1 answer
  • Which type of feedback is most helpful during the peer-review process?
    6·2 answers
  • DNA ligase creates covalent bonds between the bases of the two pieces of DNA. True or False?
    9·1 answer
  • What is the role of an indicator? Predict how the glucose test strips and iodine would react with the following foods:
    9·1 answer
  • Hi, can someone please help? Will mark brainliest!!!
    11·1 answer
  • Which domain is considered to be the oldest?
    9·1 answer
  • The attraction of water to other polar substances is called.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!