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
Finger [1]
3 years ago
7

PLEASE HELP, BIOLOGY!!!!

Biology
1 answer:
julsineya [31]3 years ago
4 0

Unlike natural selection, genetic drift does not depend on an allele’s beneficial or harmful effects. Instead, drift changes allele frequencies purely by chance, as random subsets of individuals (and the gametes of those individuals) are sampled to produce the next generation.

Every population experiences genetic drift, but small populations feel its effects more strongly. Genetic drift does not take into account an allele’s adaptive value to a population, and it may result in loss of a beneficial allele or fixation (rise to 100\%100%100, percent frequency) of a harmful allele in a population.

The founder effect and the bottleneck effect are cases in which a small population is formed from a larger population. These “sampled” populations often do not represent the genetic diversity of the original population, and their small size means they may experience strong drift for generations.

You might be interested in
What is PCR used for?
lilavasa [31]

Answer:

PCR is used in many research labs, and it also has practical applications in forensics, genetic testing, and diagnostics. For instance, PCR is used to amplify genes associated with genetic disorders from the DNA of patients (or from fetal DNA, in the case of prenatal testing).

8 0
3 years ago
Just prior to mitosis, the DNA inside a cell is copied through a process called replication. During
ch4aika [34]

Answer:

DNA replication is the process by which DNA makes a copy of itself during cell division.

Explanation:

The first step in DNA replication is to ‘unzip’ the double helix structure of the DNA? molecule.

This is carried out by an enzyme? called helicase which breaks the hydrogen bonds? holding the complementary? bases? of DNA together (A with T, C with G).

The separation of the two single strands of DNA creates a ‘Y’ shape called a replication ‘fork’. The two separated strands will act as templates for making the new strands of DNA.

8 0
3 years ago
Read 2 more answers
Please don't give me a wedsite
kkurt [141]

Answer:

The answer would be the first one

Explanation:

8 0
3 years ago
Question 2
Fittoniya [83]

Explanation:

active transport is the movement of substances across the membrane using energy from adenosine triphosphate (ATP)

5 0
3 years ago
A ___________ is the physical manifestation of a genotype.
user100 [1]

Answer:

Phenotype

Explanation:

The genetic composition of an individual or organism is referred to as its genotype. It represents the genes and the alleles present in the genome of the organism. Since genes regulate the genetic traits, the morphological expression of genotype is called phenotype.

For example, if T and t are the two alleles for the gene of plant height, the possible genotypes are "TT, Tt, and tt". Here, TT and Tt give tall plants while the genotype "tt" gives dwarf plants. Tallness and dwarfism is the phenotype associated with the above-mentioned genotypes.

5 0
3 years ago
Other questions:
  • An injection is administered through the skin using a hypodermic needle. Identify the first integumentary structure through whic
    11·1 answer
  • Based on your understanding of the terms proximal and distal, the distal sesamoid bone in the equine leg would be expected to ha
    9·2 answers
  • 15) Cara and Chuck were looking at pond water through a microscope. They saw this image. Cara wondered what it was. Chuck said i
    7·2 answers
  • Describe how urbanization affects the terrestrial environment
    13·1 answer
  • Which statement is true about cellular respiration?
    14·1 answer
  • A teacher makes the analogy that stem cell research did for medicine what the Internet did for communication. What is meant by t
    12·2 answers
  • Help me please I really need this tomorrow
    10·1 answer
  • Which of these is the most serious impact to an ecosystem after a tornado?
    11·1 answer
  • Ritika observes that her father before storing the grains always dries them
    12·2 answers
  • What are three reasons the Fawnsfoot mussel is at risk??
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!