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
dezoksy [38]
4 years ago
6

Which kinds of cells are always single-celled?

Biology
2 answers:
Valentin [98]4 years ago
6 0
Prokaryotes are always singeld celled <span />
Pepsi [2]4 years ago
4 0
Prokaryotes- bacteria, archae
You might be interested in
Reinforcement is most likely to occur when__________ (A) the environment is changing (B) hybrids have lower fitness than either
PolarNik [594]

So option B (hybrids have lower fitness than either parent population) is the correct answer.

What is Reinforcement?

Reinforcement is a consequence used in behavioral psychology to strengthen an organism's future behavior when that activity is preceded by a specific antecedent stimulus. This strengthening impact can be quantified as a higher frequency of behavior, a longer duration of behavior, a greater volume of behavior, or a shorter latency.

To learn more about Reinforcement

brainly.com/question/1483660

#SPJ4

5 0
2 years ago
Euglena are protists that move by means of flagella, and they contain chloroplasts and an eye spot or light receptor. they are c
Tatiana [17]
Whats the answer to this please
6 0
3 years ago
Read 2 more answers
Darwin theorzed that evidence for the evoiution of new species can be found in the fossill record. Which observation supports th
VashaNatasha [74]

The gradual evolution for the family Equidae (horse family) has been well documented within the fossil record.

3 0
3 years ago
A goal of using animal models is to explain the molecular detail of specific behaviors encoded in the human brain. How would you
oksian1 [2.3K]

Answer:

It is possible to compare the expression of homologous genes in the brain of <em>D. melanoganster</em> and humans, because the expression levels of conserved genes may be associated with the evolution of cognitive features such as complex learning and memory.  

Explanation:

Model organisms can be used to understand the patterns and processes that affect human evolution. <em>Drosophila melanogaster </em>is a model organism that has been used to study expression patterns of conserved genes in the course of evolution. This model organism has also been used to develop genetic mutant lines in order to examine the role of genes evolutionarily conserved in animals, including those involved in neurocognitive development.

In genetic research, an experiment as the above described is framed in a research field named 'Behavioral Genetics', which is a discipline that studies how evolutionarily conserved gene networks may be associated with neurocognitive tasks during brain evolution.

7 0
3 years ago
Having two alleles for the same trait
Alja [10]
I’m not sure what your asking. But if you have 2 different alleles of a gene it will be heterozygous
4 0
3 years ago
Other questions:
  • For what percentage of time has life existed on earth (round to the nearest whole number
    7·1 answer
  • The process by which stem cells become specialized cells is called?
    6·2 answers
  • Which statement is true about Earth′s layers?
    11·2 answers
  • Which best describes how air moves during convection?
    8·2 answers
  • Salt water is classified as a blank and a solution
    5·1 answer
  • A component of a circuit changes, as shown below. How would this change affect the electric circuit? A switch is closed, so the
    11·2 answers
  • A protein has a molecular mass of 400 kDa when measured by gel filtration. When subjected to gel electrophoresis in the presence
    5·1 answer
  • The endocrine system uses chemical messengers called *<br> -glycogen<br> -hormones<br> -starch
    5·1 answer
  • Pls help I AM ON A TIMERR PLEASE
    12·2 answers
  • You work in a lab that is studying PIWI proteins. You isolate piRISCs from cells. Based on what you know about how piRISCs silen
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!