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
choli [55]
3 years ago
10

What three processes lead to variation among offspring that have the same two parents?

Biology
1 answer:
beks73 [17]3 years ago
9 0

Explanation:

Genetic variation in offspring during sexual reproduction is caused by

  • crossing over
  • independent assortment
  • randomized fertilization

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells during cell division, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells. This process is known as mitosis, and occurs in cell division and growth processes. Two new nuclei are formed, along with identical cells. These are the same as the parent cell and the chromosome number (2n) is maintained.

Conversely in meiosis, the number of chromosomes (2n) is halved through meiotic divisions, producing 4 (n) germ cells (sperm or eggs), each containing half the number of chromosomes as its parent cell.

  • crossing over:  the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined.
  • independent assortment in metaphase I of meiosis: chromosomes align independently and genes segregate independently into new combinations ...in humans 2n, n = 23, 8 million combinations of chromosomes possible
  • randomized fertilization: sperm cells fertilize an ovum to form a zygote. This occurs randomly by chance, to result in a complete set of chromosomes 2n, that is a novel combination of half each parent's number of chromosomes

Learn more about mitosis at brainly.com/question/4303192

Learn more about transcription at brainly.com/question/11339456

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly

You might be interested in
HELP PLEASE! VERY URGENT!
alina1380 [7]

question one is actually mass, and question 2 is D.

3 0
3 years ago
What part of the digestive system turns food from a solid into a liquid
azamat
Digestive system!!! plzz give me brainlyest
7 0
3 years ago
Read 2 more answers
Select the correct answer.
ohaa [14]

its A im pretty sure it is

8 0
3 years ago
Read 2 more answers
I need help no understand ​
zalisa [80]

Answer:

The one with the circle on the left is phosphate group

The one with the car is Cystonine

The one with the house is Guanine

The one with the tree Thymine

The one with the pentagon is Dexoryisbe Sugar

The one with the Apple is  Adenine

PLZ CORRECT ME IF I AM WRONG PLZ AND THANK YOU

Explanation:

3 0
3 years ago
What is a “strain” of bacteria? How is it possible that some strains of staphylococcus aureus can be harmless, but others can be
cluponka [151]

A strain is a low-level taxonomic rank used at the intraspecific level (within a species). While the majority of the members of the same species have very high similarity in their genomes, there occasionally is a  proportion of the species that has a little different genome from the popular species group. This variability results in different strains on the species.

A harmless Staphylococcus aureus may have a muted virulence gene. However, either due to mutation of the gene or recombination with the harmful strain, a harmless Staphylococcus aureus could easily turn virulent (harmful).






4 0
3 years ago
Other questions:
  • Kohler and lipton first discovered a growth factor (pdgf) by:
    6·1 answer
  • Which of the following is a physical change? A newspaper burns when placed in a fire. An iron chair rusts when left outside. A s
    6·2 answers
  • This is kinda a stupid question but do grassland biomes have hills?
    7·2 answers
  • 3 4 5 6 7 8 9 10 TIME REMAINING 01:47:17 Some tools have graduations to show multiple measurements. For example, a ruler may hav
    6·1 answer
  • Is a heat pack safe for period pain ?
    9·1 answer
  • What is it? I don’t know the answer
    6·1 answer
  • How does artificial salmon breeding affect the native Populations? What challenges do ecologists and conservationists face in th
    8·2 answers
  • What is the biggest job that nucleic acids have
    6·2 answers
  • BLOCK:
    9·1 answer
  • Pls help due in 1 hour
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!