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
ahrayia [7]
3 years ago
12

In those parts of equatorial Africa where the malaria parasite is most common, the sickle-cell allele constitutes 20% of the β h

emoglobin alleles in the human gene pool.
Considering the overall human population of the U.S. mainland at the time when the slave trade brought large numbers of people from equatorial Africa, what was primarily acting to change the frequency of the sickle-cell allele in the overall U.S. population?
Biology
2 answers:
ICE Princess25 [194]3 years ago
5 0

Answer:

Gene flow.

Description:

In equatorial Africa, there were 20% sickle cell allele present in population. During the time of slave trade, large number of people transfers from equatorial Africa to US. Then the frequency of sickle cell allele changes in the overall US population due to migration of African people by the process of gene flow.

Gene flow:

Transfer of genetic variation from one population to another population is known as gene flow or allele flow or gene migration.

AnnyKZ [126]3 years ago
3 0

Answer:

gene flow

Explanation:

Gene flow, in simple terms, is a transfer of gene from one population to another. Also called as migration, where there is movement of individuals, and the genetic material they carry from one population to another. It also involves successful breeding of these individuals in their new locations. When people with sickle cell anemia were brought into the US, transfer of the gene responsible for sickle cell disease changed the frequency of the sickle cell allele in overall US population.

You might be interested in
Why do you think it is important for climate scientists to study El Niño?
Mumz [18]

Answer:

answer below

Explanation:

this seemingly isolated event is just one part of the global climate system and can actually have major influences on the weather and climate around the world

7 0
3 years ago
Muscles work in _________________________________________, contracting and relaxing. These muscles are called __________________
7nadin3 [17]

Answer:

the human body first. 2 nd part joints

4 0
3 years ago
What term is defined as mathematical equations based on rules of physics
Svetlanka [38]
I believe it is scientific laws.
4 0
3 years ago
SOMEONE HELP ME RN PLEASEEE!! what statement best describes evolution???
Tanya [424]
I’m pretty sure it’s the second one
5 0
3 years ago
Read 2 more answers
5. In four o'clock, red color exhibits incomplete dominance over white; when both exist together, the flowers are pink. i. In a
Anvisha [2.4K]

Answer:

The genotype of the offspring would be heterogeneous.

Explanation:

In four O'clock plants in case of incomplete dominance,  no colour is dominant. They are existing in an intermediate character / a new character. This new colour is pink, not white or red.

The white and red colour flowers are wild type and homogenous type. When the cross occurs and incomplete dominance happen, the F1 flower would be pink one but heterogeneous.

Because according to Mendel's deviation, there are such character appears where neither dominant nor the recessive are the only expressive traits. This has seen in incomplete dominance.

In codominance, which is the another Mendelian deviation, where both the characters has expressed. For example the rose flower having both red and white dots in it. The expression two colours / dominant and recessive characters in the flower is called codominance. Because both expresses at the same time. This codominance genotype is also heterogeneous.

6 0
3 years ago
Other questions:
  • WHOS GOOD AT SCIENCE?! BRIANLIESTTT
    15·2 answers
  • Pentane with molecular formula c5h12 exists in three isomeric forms. One shows linear carbon chains, another has on -CH3 groups
    10·1 answer
  • What is meant by the “life cycle” of a parasite? What importance does it have to those who take care of patients with parasitic
    8·1 answer
  • Which phylum of fungi consists of decomposers that utilize flagellated spores?
    7·2 answers
  • You mature gradually, but do some things, like graduate high school, all at once. This is an example of:
    12·2 answers
  • How does surface area change with size and why is it important?
    12·1 answer
  • Should genetic testing influence medical treatment lifestyle, and social decisions?
    8·1 answer
  • How is the variegated leaf trait inherited?
    6·1 answer
  • True or False: The midbrain is responsible for visual and auditory reflexes, posture, and movement.
    9·1 answer
  • What is agar (our growth media) and how it was prepared.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!