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
mestny [16]
3 years ago
15

Explain how mitotic recombination leads to the mosaic condition termed twin spots.

Biology
1 answer:
postnew [5]3 years ago
7 0

Answer:

If an individual Drosophila has two or more populations of cells comprising different genotypes from one single egg then it is termed as twin spots or mosaic.

Explanation:

There might be different reasons for mosaic to occur like

Nondisjunctioning of the chromosomes

Lag in anaphase

Endoreplication

Mutations in a single cell

Mitotic recombination:

One of the major ways through which mosaic or twin spots arise is the mitotic recombination. It is also termed as somatic cross over. Twin spot or mosaic generally occurs if there is linking of heterozygous genes in repulsion. The recombination generally happens among the centromeres from the adjacent genes.

A common example of the mitotic recombination is the Bloom's syndrome. Bloom's syndrome is caused due to the mutation that occurs in the <em>blm</em> gene. As a result, there are defects in the BLM protein produced.

You might be interested in
Almost any chemical can be harmful if 
kupik [55]
I would say the answer is b but all of the answer choices could be the correct answer(hope that helps)
7 0
3 years ago
When the same gene was sequenced in a different person, the sequence was ATTTAGCC
neonofarm [45]

The different DNA sequence for a gene shows that same character can be expressed in 2 or more forms. Alleles are present on homologous chromosome.

Explanation:

The gene is the DNA sequences on the chromosome coding for the particular trait in an organism.

The alleles are the variant of the gene. In a homologous chromosome the variant of the gene or allele is present. The homologous chromosome is present in progeny one from each parent.

For example the allele for tall as homozygous is present on one of the parent and shortness on the other parent in homologous chromosome. The trait of height is the gene and the way it expresses itself is the trait from either parent. The DNA sequence will also be different for the alleles because they will code for different proteins like short or tall phenotype.

The genotype will be different hence DNA sequence is also changed.

8 0
3 years ago
A nurse is providing teaching to a client who will undergo chemotherapy and radiation prior to hematopoietic stem cell transplan
jek_recluse [69]

Answer:

The main purpose of these therapies are to suppress the immune system and destroy cancer cells of the blood by destroying the ability of the body to produce blood cells inside the bone marrow in preparation of the bone marrow for the new stem cells from the donor.

Explanation:

In the treatment of acute myeloid leukemia (AML), hematopoietic stem cell transplantation (HSCT) procedure is employed. It involves the infusion of healthy blood-forming stem cells from a donor into the body of the patient to initiate production of healthy blood cells after the hematopoietic function of the bone marrow of the patient has been destroyed by chemotherapy and radiation.

Before the stem transplant, the patient is subjected to a conditioning process or therapy, which involves undergoing a treatment through chemotherapy and radiation therapy. <em>The main purpose of these therapies are to suppress the immune system and destroy cancer cells of the blood by destroying the ability of the body to produce blood cells inside the bone marrow in preparation of the bone marrow for the new stem cells from the donor. </em>

After these therapies, the transplant infusion takes place, which is usually painless.

4 0
3 years ago
Question 22
8_murik_8 [283]

Answer:

trophic level

Explanation:

The energy pyramid indicates how energy is transferred from one organism to the next on the food chain. There are four main levels, starting at the base with producers that take energy from the sun, and moving upward to primary, secondary and tertiary consumers. The pyramid of numbers represent the number of organism in each trophic level.

4 0
3 years ago
Check out the illustration above using the correct terminology test with the correct letter to structures explain how it related
Sliva [168]

Answer: There is no illustration above!!!

5 0
3 years ago
Other questions:
  • Which post disaster phase is generally characterized by optimism due to an infusion of resources?
    15·1 answer
  • As people progress through middle adulthood, they experience __________ (primary aging) in the form of molecular and cellular ch
    10·1 answer
  • A lipid that the body requires to make several critical substances but can’t synthesize on its own is _____.
    5·1 answer
  • What can you do to prevent or lessen the generation of hazardous wastes?​
    15·1 answer
  • An increase in biodiversity generally causes what ?
    11·1 answer
  • True or False: Alex used her fingers to remove the lid from a can of vegetables after he opened it with a can opener. Sophia kno
    13·1 answer
  • 3. During the day, transpiration and photosynthesis are related, give reasons?<br>​
    5·2 answers
  • Explain the method scientists use to study how Earth’s atmosphere and climate have changed during the past million years.
    12·1 answer
  • 1. ¿Crees que hay algún elemento de tu cuerpo que no cambie durante toda tu vida? O, todo cambia
    14·1 answer
  • Need help with biology​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!