BIOLOGY MIDDLE SCHOOL

In sickle-cell disease, an allele produces red blood cells with an abnormal shape, which affects many othertraits in the same individual. What genetic behavior does this describe?
O polygenic
O codominance
O dominance
O pleiotropy

Answers

Answer 1
Answer:

Answer:

Pleiotropy

Explanation:

The pleiotropic is a type of genetic behaviour which influence and affect more than one trait. Sickle cell anemia disease is a type of pleiotropism. In sickle cell anaemia patients, haemoglobin A is entirely replaced with haemoglobin S. Such patients have the genotype HBs HBs. Heterozygotes who carry the sickle cell gene HBa HBs are said to have a condition called sickle cell trait thus the expression of two different genotypes by one single gene indicates pleiotropism.

Haemoglobin S crystallizes when oxygen concentration is low in capillaries making the red blood cells to assume a crescent or sickle shape. Such cells transport oxygen very poorly leading to anaemia.

Related Questions

Science!!!This is due in 20 min!I have compared a cell to an amusement park for the assignment what part of an amusement park is similar to a mitochondria (breaks down food to make energy for cell)
For my science fair project, Im doing "Which plant fertilizer works best?" Im just not sure which plant i should use. My project is due sometime February 10-20
I need help with #10
The movement of water from ocean to the atmosphere to the land and back to the ocean is calleda. water evaporation. c. water precipitation. b. water condensation. d. the water cycle.
If the average student's arms can extend about 1.3m how many students would have to join hands to form a human chain around a giant sequoia ? the sequoia is 30 m around and grow to about 91m tall \

The transfer of genes from one population to another

Answers

The transfer of genes from one population to another is called gene flow . Gene flow can occur through a variety of mechanisms, including:

Migration: When individuals move from one population to another, they bring their genes with them.

Interbreeding  When individuals from different populations mate, their offspring inherit genes from both parents.

Horizontal gene transfer  This is a process by which bacteria can exchange genes with each other, even if they are not closely related.

Gene flow is an important factor in evolution, as it can introduce new genes into a population and increase genetic diversity. This can help the population to adapt to new environmental conditions and to resist diseases.

Here are some examples of gene flow:

Monarch butterflies  Monarch butterflies migrate from North America to Mexico each year. When they mate in Mexico, their offspring inherit genes from both parents. This gene flow helps to maintain the genetic diversity of the monarch population.

Gene flow is a complex phenomenon that can be affected by a variety of factors, including the distance between populations, the rate of migration, and the presence of barriers to migration.

To know more about  genes

brainly.com/question/31121266

#SPJ12

Answer:

gene flow

Explanation:

1: Why are siblings not genetically identical even if they have the same parents?2: Why are offspring not genetically identical to either the parent in sexuall reproduction?

Answers

each sperm and egg cell combine differently, so even if the parents are the same, the genetic material in their reproductive cells is different and can combine in different ways. the children are not clones of their parents, rather combinations of their traits

Which organelle functions in modifying proteins after they are made on the ribosome? A. Golgi apparatus
B. Smooth endoplasmic reticulum
C.Rough endoplasmic reticulum
D. Ribosomes

Answers

The answer is A) Golgi apparatus

What is the difference in temperature ranges between Crescent city, Council bluffs, and Cleveland?

Answers

The temperature in Crescent City ranges from 4C (39F) to 19C (66F)

The temperature in Council Bluffs ranges from -11C (12F) to 30.5C (87F)

The temperature in Cleveland ranges from -4C (25F) to 28C (82F)
Well... im not 100% sure but I think that Crescent city's temperature ranges are sorta in the middle of them both

Weather is driven by…. A) Unequal heating of the earth
B) Wind
C) Both
D) Neither

Answers

Answer:

Air pressure. Aka: Wind

Explanation:

Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy.

All living things are made of two or more cells

Answers

yes, either single cell or multi-cell organisms.
False,because eggs and spores are single celled organisms
Other Questions
Which factors cause weather patterns? Check all that apply.diverse landscapesmotion in spaceoceansseasonssolar radiationfronts
Which contribution did Copernicus make to our view of the solar system? A.He proposed the sun-centered model of the solar system.B.He showed that planets moved in elliptical orbits.C.He proposed that gravity kept the planets in their orbits.D.He proposed the earth-centered model of the solar system.
In general, how do most nutrients reach the mesopelagic and bathypelagic zones? 1, Nutrients sink into these zones from the epipelagic zone. 2. Nutrients diffuse into these zones from deeper water. 3. Nutrients are produced by phytoplankton living in these zones. 4.Nutrients are produced by zooplankton living in these zones
What are the stuctues and functions of cell organelles, and how do theg mantain homeostasis?