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
ddd [48]
3 years ago
5

Geneticists sometimes use the following test for the nullness of an allele in a diploid organism: If the abnormal phenotype seen

in a homozygote for the allele is identical to that seen in a heterozygote (where one chromosome carries the allele in question and the homologous chromosome is known to be completely deleted for the gene) then the allele is null. What is the underlying rationale for this test?
Biology
1 answer:
amid [387]3 years ago
4 0

Answer:

There will be null activity for a gene within in the deletion, this means if a genotype has similar phenotype. This suggests that mutant allele and the allele with deletion has the same level of activity.

Explanation:

The limitation of such interpretation is that the phenotypes have the enzymatic activity according to a threshold level. This means that the mutant phenotype is visible till the enzymatic activity is lower than a threshold. If the level rises above the threshold the wild type phenotype is observed.

You might be interested in
The fundamental reproductive cell produced by fungi is the _______.
raketka [301]
I think the answer is spore hope this helps
3 0
2 years ago
Why do you think this is important for aquatic animals that live in very cold places?
Elenna [48]

Answer: here´s why

Explanation: Underneath the frozen upper layer, the water remains in its liquid form and does not freeze. Also, oxygen is trapped beneath the layer of ice. As a result, fish and other aquatic animals find it possible to live comfortably in the frozen lakes and ponds. If water is heated, its volume gradually decreases.

6 0
2 years ago
Three effects of constipation​
algol13

1. Infections

If you end up being constipated, you are probably having trouble passing a stool. If the stool has become dry and hard from lack of moisture, it could make having a bowel movement painful. When the rectum is stretched out to accommodate the painful stool, the rectum could stay open resulting in rectal prolapse. This could lead to an infection.

 

2. Bad breath

One unusual side effect is bad breath. You may wonder how a condition that is occurring at one end of your body could affect the complete opposite end of your body, but it can. What happens is the gasses and toxic waste that are building up because you are constipated rises up and as it goes throughout the body and it usually ends up in your mouth.

3. Lowered ratio of healthy bacteria

Healthy bacteria in your body is called flora. The purpose of flora is to help with the production of vitamins and helps with your immune system. When you are constipated the amount of flora in your intestine is reduced putting you at risk for illness and infection.

Extra Options

4. Colon cancer

The colon is meant to store a couple of pounds of stools. If you become constipated, there is a buildup of stools and puts the colon at risk for ripping. When the colon becomes strained because it is overloaded, it strains the inner membrane. Ruptures and possible infections occur and it could lead to colon cancer.

 

5. Increased toxins

Your skin will show on the outside what your body is going through on the inside. If you become constipated, you will suffer an excess of toxins in your body. The skin, your largest organ, has to work overtime to get rid of these toxins. If your skin looks less than glowing you need to address the issues that are going on inside of your body before you start looking for a new facial cream.

From- naturalon.com

6 0
3 years ago
Darla was in an automobile accident that resulted in an injury to her brain. her sense of touch has been affected. which part of
meriva
I believe the answer to your question is the p<span>arietal lobes</span>
3 0
3 years ago
Read 2 more answers
When pollen moves from the stamen of a flower on one plant to the pistil of the flower of a different plant this is called what?
Ainat [17]

Answer:

Its pollination

Explanation: The process by which pollen is delivered to the ovule of a gymnosperm or the stigma of an angiosperm. And a pollinator is an organism or other agents such as wind or water that transfers pollen from one plant to another; most commonly applied to organisms. hope this helps!

8 0
3 years ago
Other questions:
  • The destruction of natural habitat for the development of cities is known as
    14·2 answers
  • A human sperm cell has Select one:
    8·2 answers
  • The ultimate product of transcription and translation is the formation of _________.
    8·1 answer
  • Which describes sand
    5·2 answers
  • A scienntist is examining an organism that feeds on decaying matter to gain energy for survival. What kingdon would be the best
    9·1 answer
  • Create a personal plan of preventative health and dental management. What steps can you take to maintain your health and wellnes
    14·2 answers
  • 1. Submit your observations of the chicken leg dissection.
    7·1 answer
  • The age of rock as determined by the other rock surrounding it is known as ______________.
    11·1 answer
  • Why does the invasive brown treesnake have a negative effect on the biodiversity of guam?
    6·1 answer
  • Given the sequence of acgtat, read in the 5’ → 3’ direction, what would be the sequence of the opposite strand, read in the 5’ →
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!