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
ryzh [129]
2 years ago
14

In a species of birds, wing size is controlled by a single gene that has only two alleles. The same species lives in two differe

nt forests. In one forest, the trees have less foliage and the birds' nests are more susceptible to predation. The large-winged birds are able to flee more quickly. In the other forest, the birds with smaller wings are more obscured from predators. Which of the following best describes the species of birds in the different forests?
A) Selective pressures can cause alleles that are adaptive in one environment to become deleterious in another.
B) The species will eventually develop an intermediate wing size in both populations.
C) The alleles of both populations will undergo directional selection to have the same allele frequencies.
D) If genetic diversity and allele frequencies differ, the species will risk decline.
Biology
2 answers:
ahrayia [7]2 years ago
7 0

Answer:

A

Explanation:

Given these two environments, the birds will both adapt differently to different pressing needs over time. But the changes made in one environment could be detrimental if that species of bird switched environments.

olchik [2.2K]2 years ago
5 0
The best answer will be B) because all of them are sound so wrong
You might be interested in
How does the brain control human behavior? Select one:
makkiz [27]

A) Specific brain regions control specific behaviors.

7 0
2 years ago
IPSPs are the result of: a. decreasing membrane conductance to potassium neurotransmitter b. binding to ligand-gated ion channel
bearhunter [10]

IPSPs are the result of:

a. decreasing membrane conductance to sodium

b. decreasing membrane conductance to potassium

c. inhibitory neurotransmitter entering the postsynaptic cell

d. neurotransmitter binding to ligand-gated ion channels that are chloride selective

Answer:

d. neurotransmitter binding to ligand-gated ion channels that are chloride selective

Explanation:

IPSP refers to inhibitory postsynaptic potential (IPSP). It occurs when the neurotransmitters released from the axon terminals of the presynaptic neurons bind to and open the chloride ion channels. This allows the entry of chloride ions into the neuron making the inside of the membrane even more negative. This does not allow firing of the action potential. The postsynaptic neuron is said to be hyperpolarized. Therefore, IPSP results from hyperpolarization of postsynaptic neurons by the opening of ion channels such as chloride channels.

3 0
2 years ago
Jesse has a heart condition. What would a physiologist and an anatomist do to diagnose the heart condition?
Snezhnost [94]

Answer:

Physiologist: monitor heart rate; Anatomist: analyze the structures within the heart chambers

Explanation:

8 0
2 years ago
1. Starting in the mouth, food follows a pathway through the digestive system. Describe how the mouth is involved in both mechan
ikadub [295]

Explanation:

1) Chemical digestion begins in the mouth when food mixes with saliva. Saliva contains an enzyme (amylase) that begins the breakdown of carbohydrates.

2) The daily values are reference amounts (expressed in grams, milligrams, or micrograms) of nutrients to consume or not to exceed each day. The %DV helps you determine if a seving of food is high or low in a nutrient.

3) If a food has a daily value of 5% or less of a nutrient, it is considered to be low in that nutrient.

A food is a good source of a nutrient if the percent daily value is between 10% and 19%, If the food has 20% or more of the daily value, it is considered an excellent source of that nutrient.

4) As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body.

5) During digestion, your pancreas makes pancreatic juices called enzymes. These enzymes break down sugars, fats, and starches. Your pancreas also helps your digestive system by making hormones. These are chemical messengers that travel through your blood.

Glad to help!!!!

7 0
3 years ago
PLEASE HELLPPP
Scorpion4ik [409]
Of the given possible statements, the one that best supports that a newly discovered species is that the animal's body temperature increased when the ambient temperature increased. An exothermic animal relies on eternal temperatures to keep warm and so a rise in ambient temperatures would cause a rise in internal temperatures of the animal. Therefore, the answer is a.
5 0
2 years ago
Other questions:
  • What two processes sustain the earth’s tremendous biodiversity?
    9·1 answer
  • An immune response to a tissue graft will differ from an immune response to a bacterium because ________.
    15·1 answer
  • 5. Which of the rock samples below is most likely to be a metamorphic rock?
    8·2 answers
  • The three basic components of all connective tissues are
    15·1 answer
  • Write a food chain from this food web with six trophic levels.<br><br> Link In Comments
    6·1 answer
  • *K-selected
    6·1 answer
  • For the voltage-gated sodium channel to allow sodium into the cell:_______.
    13·1 answer
  • What is the correct order of the layers of earth starting deep in the center?
    15·2 answers
  • TRUE/FALSE
    5·2 answers
  • What are the advantages of deforestation on rivers?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!