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
Lera25 [3.4K]
2 years ago
14

(NEED ASAP!) how does crossing over during meiosis allow for genetic variablity?

Biology
1 answer:
swat322 years ago
5 0
Homologous chromosomes pair, then the chromosomes cross over in certain points. Then the Chromosomes break up and then pair again which results in different genes since they traded. Which is the result of genetic variability.
You might be interested in
If you were planting a vegetable garden, what should you consider for the time of planting?
zvonat [6]

When planting vegetables it is very important to know the climate of the area, its usual patterns, and how will that affect the growth and development of the crops. The soil quality too is very important, as it is the basis for the development of the root-stock of the crops.

If we have a temperate type of climate, than we have four different seasons, meaning different weather patterns throughout the year. We can take onions, radish, and peppers as vegetables of choice. The onions can be planted in mid-autumn, as they will need more moisture, and they are resilient to low temperatures, thus will not have problems in the winter, and in the spring they will already have the basis so will grow quickly and be larger. The radish can be planet in late winter or early spring, in a period when there is more precipitation. It is not a vegetable that likes high temperatures, so with its quick development, it will be able to develop the tuber by late spring. The peppers can not sustain low temperatures, so they should be planted in late spring. They also like warm weather and lot of water, so it will be needed to water them a lot in the hot and dry period. They will manage to develop and produce the vegetables by the end of the summer, thus not getting damaged by the cold nights in the autumn.

7 0
3 years ago
Pathogens that are catalase-positive, such as Mycobacterium tuberculosis, Legionella pneumophila, and Campylobacter jejuni, make
Vlada [557]

Answer:

B)inducible

C. )extracellular enzyme

Explanation:

Catalase is an enzyme that is engaged during the the decomposition of hydrogen peroxide to form water and oxygen, it is posses by all living organisms because of their exposure to oxygen, hence it protect the cell from oxidative damage by reactive oxygen species.

Catalase enzymes function in our liver by breaking down harmful hydrogen peroxide into oxygen and water ,during this reaction , the bubbles of oxygen gas that escape create a foam that will help to disinfect any surface touch by the raw liver during this process. Catalase enzymes are extracellular enzyme and are inducible.

6 0
3 years ago
Evolution of antibiotic resistance in bacteria was not an issue until sometime in the 1990’s.
Setler [38]

Answer:

your right!

Explanation:

i had something like this and i got a 100% on my exam the evolution issue was sometime in the 1990's.

8 0
3 years ago
Question 1 (2 points)
Sauron [17]
Energy pyramid I think
6 0
3 years ago
Read 2 more answers
Enzymes are ___? A.fats b.acids c. Sugars d.proteins
UkoKoshka [18]

The answer is D) proteins

6 0
3 years ago
Other questions:
  • Members of the alkaline earth elements have several things in common. They are
    7·2 answers
  • If nondisjunction occurs during meiosis, a only two gametes may form instead of four. b some gametes may have an extra copy of s
    11·1 answer
  • PLEASE HELP I REALLY NEED THIS DONE FAST!! BRAINLIEST!!! 50 POINTS PER PERSON!!! I WILL MARK BRAINLIEST TO WHOEVER GIVES A GOOD
    9·1 answer
  • Following a cut or scrape what process repairs your skin?
    9·2 answers
  • Which of the following are characteristics of arthropods? 1. Protostome development 2. Bilateral symmetry 3. A pseudocoelom 4. T
    7·1 answer
  •  In which of the following situations is salinity highest? 
    8·1 answer
  • Any idea on what it is?
    12·1 answer
  • A population of snakes that eat small rodents enters a new habitat. In the new habitat, there are many species of rodents, and t
    14·2 answers
  • Which of the following alternative engery technologies is most likey to be used to power a car?
    14·1 answer
  • The primary purpose of a restriction enzyme in genetics is…
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!