What occurs in nondisjunction and what effect does it have on the resulting cells?

Answers

Answer 1
Answer:


Nondisjunction is the failure of a pair of chromosomes to separate (to disjoin) during cell division (meiosis).  When this happens ( in anaphase I of meiosis)  two out of the four new daughter cells produced from a parent cell will have an extra copy of one chromosome and the other two daughter cells will end up missing that chromosome. 

Most of the time when fertilization involves gametes with an abnormal number of chromosomes, the resulting cell does not survive to produce a new individual. However there are some cases where the individuals survive and such, when they are born end up having a syndrome caused by too many or too few chromosomes. An example is Turners syndrome  caused by too few chromosomes  (monosomy x) , and Down syndrome caused by too many chromosomes (trisomy 21).



Answer 2
Answer:

Answer:

Nondisjunction is the failure of a pair of chromosomes to separate during meiosis.

Explanation:


Related Questions

Which describe the particle or particles that are in the nucleus of an atom 
For a given species an increased evolutionary rate would cause a decrease in
What is the difference between prokaryotic and eukaryotic cells?A. Organisms with eukaryotic cells are always multicellular, but organisms with prokaryotic cells are not. B. Eukaryotic cells do not have membrane-bound organelles, but prokaryotic cells do. C. Prokaryotic cells do not have a nucleus, but eukaryotic cells do. D. Prokaryotic cells always have cell walls, but eukaryotic cells do not.
How did Reagan's election influence the judicial branch at the federal level?a. New justices ruled consistently to separate church and state. b. New justices overturned many civil rights cases. c. New justices reversed the Court's liberal bent. d. New justices mostly supported rulings of the Warren Court
Which statement describes all enzymes?a. They control the transport of materialsb. They provide energy for chemical reactionsc. They affect the rate of chemical reactionsd. They absorb oxygen from the environmentPlease explain why.

What organelle is found in the cytoplasm

Answers

There are multiple organelles found in the cytoplasm such as mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, ribosomes, and vacuoles.

When Gregor Mendel crossed true-breeding tall plants with true-breeding short plants, why was it impossible to observe segregation? A. Alleles for height do not segregate in the F2.

B. Alleles segregate only in the F2 generation.

C. Alleles segregate best when two tall plants are crossed.

D. Alleles in the F1 must be Tt to have height variety in the F2.

Answers

When Gregor Mendel crossed true-breeding tall plants with true-breeding short plants, it was impossible to observe segregation because D) alleles in the F1 must be Tt to have height variety in the F2.

Answer:

Alleles in the F1 must be Tt to have height variety in the F2.

Explanation:

  • The law of segregation given by Mendel states that the pair of an allele for a given gene separate during the formation of gametes and then these gametes fuse randomly with each other during fertilization to determine the genotype of the individual.
  • Therefore, for a pure breeding tall plant, the alleles would form two gametes each having the allele T and for a pure breeding small plant, each of the gametes will have allele t.
  • Therefore, the only possible combination from TT X tt would be Tt and thus, segregation is not observed.

Which statement describes how work and power are similar? (2 points) You must know force and distance to calculate both. You must know energy and force to calculate both. You must know velocity and time to calculate both. You must know time and energy to calculate both.

Answers

A force is said to have done work, if it manages to cause a displacement in an object from its starting point. Power can be defined as the rate of doing work. The work can be calculated using the following formula:

Work done ⇒ Force × Displacement

The power can be calculated using the following formula:

Power ⇒ Work ÷ Time

In order to calculate the work and power, the force and distance should be known. The force and distance will help calculate the work, which will help in the calculation of the power of the object.

Hence, the answer is 'you must known force and distance to calculate both'.

Final answer:

Work and power, concepts from physics, are similar in that both require knowledge of force and distance for their calculation.

Explanation:

Work and power are both concepts dealing with energy in physics. The correct statement that describes how work and power are similar is 'You must know force and distance to calculate both.' To calculate work, the formula is work = force x distance. For power, which is the rate at which work is done, the formula is power = work/time. Although time is included in the calculation for power, it's not required in the calculation for work. Thus, force and distance are the key common components needed for both calculations.

Learn more about Work and Power here:

brainly.com/question/18368199

#SPJ6

One of the consequences of poverty is that poverty stricken people _____.a. Are less able to enjoy society’s benefits
b. Are more likely to achieve high social status
c. Are more likely to hold white collar jobs
d. Are less likely to hold low paying jobs

Answers

The correct answer is (a) Poverty stricken people are less able to enjoy society's benefits.

The benefits of society includes many facilities such as financial benefits, or assistance for education, assistance for unemployment and many more. The poor people lack these kinds of facilities because they do not belong to a proper commodity that are served by these kinds of facilities. These kinds of facilities are only enjoyed by the elite class of the society.


One of the consequences of poverty is that poverty stricken people are less able to enjoy society’s benefitssuch an an education.

What is poverty?

Poverty refers to.the inability of individuals to be able to provide for the basic needs of life such as food, clothing and shelter effectively.

Poverty has a lot of negative consequences which include;

  • inability to obtain food
  • inability to obtain adequate healthcare
  • inability to obtain a good education.

Therefore, one of the consequences of poverty is that poverty stricken people are less able to enjoy society’s benefits.

Learn more about poverty at: brainly.com/question/9640781

Why must cells reproduce?

HELP PLZZ :((

Answers

Answer: Cell division is key to life: from the moment we are first conceived, we are continually changing and growing. In order for our bodies to grow and develop, they must produce new cells—and allow for the death of old cells. Cell division is also an essential component of injury repair.

Explanation: have a good day

Cells must reproduce to provide protection for your body.

Hope this helps; have a great day!

How do parasites serve as a density-dependent limiting factor

Answers

Parasites can limit the growth of a population. They take nourishment from their hosts, often weakening them and causing disease or death.
As the population of parasites grow, the population of their hosts tend to decrease.