BIOLOGY MIDDLE SCHOOL

Spotted owls exist in multiple variations. Two species are shown in the image above. What answer below BEST DESCRIBES the cause & effect of the two different species? Question 1 options:


The common ancestors of these owls were geographically isolated, but can still interbreed, as the allele frequencies have likely not changed much.


The common ancestors of these owls were temporally isolated, but can still interbreed, as the allele frequencies have likely not changed much.


The common ancestors of these owls were geographically isolated, and over time the allele frequencies changed so much they are no longer able to interbreed.


The common ancestors of these owls were temporally isolated, and over time the allele frequencies changed so much they are no longer able to interbreed.

Answers

Answer 1
Answer:

Answer:

C. The common ancestors of these owls were geographically isolated, and over time the allele frequencies changed so much they are no longer able to interbreed.

Explanation:

This is an example of allopatric speciation. Allopatric speciation, also called geographical speciation, involves the development of a new species when the ancestral population becomes separated by geographical barriers such as a river or a mountain range. This could also take place when the ancestors of the two species emigrate to another area.

In different geographic locations, the separated ancestors undergo gradual evolutionary changes, ultimately, the the two species become so genetically diverse that they cannot interbreed.

Answer 2
Answer:

Answer:

C is correct for future users

Explanation:

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Answers

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Glucose is broken down in different ways both in the presence and in the absence of oxygen.Using the table for reference, which reaction precedes each member of the reaction set in column one?
Reaction set Preceded by
glycolysis A
Krebs cycle B
ETS C
lactic acid fermentation D


A.
A. photosynthesis in plants
B. glycolysis
C. glycolysis
D. Krebs cycle


B.
A. glycolysis
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D. glycolysis


C.
A. glycolysis
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Answers

For the given reaction set:

Glycolysis (A) 
Krebs cycle (B) 
ETS (C) 
lactic acid fermentation (D)

Each of the elements of the reaction set is preceded by corresponding elements of set D which consists of:

A. photosynthesis in plants
B. glycolysis
C. Krebs cycle
D. glycolysis

To summarize the order of the reactions:

photosynthesis in plants > glycolysis > Kreb's cycle (aerobic respiration) or lactic acid fermentation (anaerobic respiration) > Electron Transport Chain (ETC)

Aerobic respiration: 
Photosynthesis produces glucose, which is used in glycolysis. Glycolysis produces ATP, NADH, and pyruvate. Pyruvate is then used in the Kreb's cycle to produce NADH, FADH2, ATP, and CO2. The ETC then uses the NADH and FADH2 to produce energy.

Anaerobic respiration:
The same process is followed until glycolysis. The pyruvate produced from glycolysis is used in the lactic acid fermentation process to produce lactic acid.

Correct answer is

A. NAD+

B. ATP

C. Pyruvic Acid, ATP, NADH

D. ATP, FADH2, NADH

a single strand of dna helix has a code ataggc. which would be the complementary code on the other strand of the helix

Answers

the complementary code would be tatccg
g=c
t=a
Do you mean Adenine the other on ewould be thymine

You have three species A, B, and C. Assume that they form a monophyletic groupA's gene sequence is very similar to B
A has some physical similarities to B.

B's gene sequence is very different from C's
B has some physical similarities to C
SELECT ANY ANSWERS THAT ARE CORRECT
1. A and B are probably closely related
2. B and C are probably closely related
3. A and C are probably closely related
4. B is probably an outgroup while A and C are sister taxa
5. A is probably an outgroup while B and C are sister taxa
6. C is probably an outgroup while A and B are sister taxa

Answers

Answer:

1 and 6 are correct

Explanation:

1. A and B are probably closely related - true, as reflected by their close gene sequences which usually represents a very close genetic relationship

2. B and C are probably closely related  - false, if their gene sequences are very different then they are probably not so closely related

3. A and C are probably closely related  - false, we know A and B are close, and B and C are very different, therefore A is probably also very different

4. B is probably an outgroup while A and C are sister taxa  - false, A and B are highly similar

5. A is probably an outgroup while B and C are sister taxa  - false, B and C are very different genetically

6. C is probably an outgroup while A and B are sister taxa - true, we know A and B share similar gene sequences, whereas C is distinct.

Do acids have a low or high pH

Answers

Answer:

Acids have low pH. Usually around 1.
Low ph acids ghtscghfru

Definition: This is the type of growth experienced by a population that increases at a rate proportional to its size. The larger the population gets, the faster it grows.

Answers

the answer is Exponential Growth        
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