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
MaRussiya [10]
3 years ago
10

Why are lethal dominant alleles so much more rare than lethal recessive alleles?

Biology
1 answer:
juin [17]3 years ago
5 0

Lethal alleles cause the death of an organism prenatal or after the birth. Lethal alleles are usually a consequence of a mutation and they can be recessive, dominant or conditional. Since the lethal dominant alleles are harmful whether they are carried in homozygous (e.g.AA) or heterozygous (e.g.Aa) form,  a strong selection against them is present and thus these alleles are much more rare.

You might be interested in
When an action potential is generated within a motor neuron, ________. When an action potential is generated within a motor neur
svlad2 [7]

Answer:

every muscle cell of the motor unit is stimulated to contract.

Explanation:

Stimulus in biology can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.

In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ. Therefore, the senses are necessary for behavior because stimuli must be sensed in order to respond.

Stimulus control can be defined as a phenomenon that arises when a living organism responds or behaves in the presence of a stimulus and in another way in the absence of a stimulus.

For example, opening the door of a microwave oven as soon as its timer beeps.

Example II; When your body touches a hot object, you quickly move away and feel some pain subsequently.

Action potentials generates the nerve impulse in a motor neuron.

When an action potential is generated within a motor neuron, every muscle cell of the motor unit is stimulated to contract.

6 0
3 years ago
What type of relationship exist between the common teasel and all of the other plants?
g100num [7]

Answer:

correct me if im worng but i think is Dipsacaceae

Explanation:

8 0
2 years ago
With independent assortment, the ratio of phenotypes in the F2 generation of a cross between true-breeding strains (AA bb x aa B
Alecsey [184]

Answer:

B. Dominant for one trait and recessive for the other

Explanation:

using the Punnetts square for the question above, the 9 in the ration refers to a dominant for both traits such as AABB, AaBb.

while the 3: 3 refers to a dominant for a single trait and recessive for one such as AAbb, Aabb, aaBB, aaBb

and the 1 refers to recessive for both traits such as aabb.

6 0
3 years ago
Similarities between prokaryotic and eukaryotic cells
Paul [167]

Answer:

Prokaryotic, and eukaryotic cells share basically four common features:

1) A plasma membrane which is known as outer covering membrane it helps to separate the interior part of the cell from its surrounding.

2) Cytoplasm which is consisted of gel like region inside the cell where other parts of the cell are found.

3) Genetic material of the cell which is known as DNA.

4) Ribosomes, which helps in protein synthesis.

3 0
3 years ago
What statement describes the mutation in the diagram
mr Goodwill [35]

Answer:

whats da diagram

Explanation:

5 0
3 years ago
Other questions:
  • Sasha places a semipermeable membrane in a beaker and adds water to the beaker. She then adds sugar to the water on the left sid
    9·1 answer
  • A carrier is a person who has
    13·1 answer
  • What albedo has to do with arctic sea ice melt.​
    8·1 answer
  • Fatty acids are to Lipids; as? *
    15·1 answer
  • Some fish have bony fins. If the body of water they are in dries out, these fins can be used to help the fish "walk" to another
    13·1 answer
  • Which is the central element for all living things?
    7·1 answer
  • WILL GIVE BRAINLIEST!!!!!<br> All living things are made of carbon.<br><br> True<br><br> False
    5·1 answer
  • Some rocks are formed from _______ that erupts from volcanoes as lava.
    15·1 answer
  • By-products of photosynthesis are glucose and
    8·2 answers
  • Amniocentesis chorionic villus sampling, and multiple marker screening provide important information about the health of the let
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!