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vekshin1
3 years ago
9

Theory #1 -Based on the discovery of a 240-million-year-old fossil archosaur, paleontologists theorize that dinosaurs split off

early from the crocodile family tree. The journal Nature describes Asilisaurus kongwe as a dog-sized, plant-eating dinosaur precursor. Asilisaurus lived during the Triassic period, when crocodile-like beasts ruled the Earth, with dinosaurs becoming dominant some 35 million years later.
Theory #2 - Almost 20 years of research on the morphology of birds and dinosaurs support a different theory: that birds may have had an ancient common ancestor with dinosaurs, but they evolved separately on their own path and after millions of years, birds also gave rise to the raptors. Small animals such as velociraptors, that have generally been thought to be dinosaurs, are more likely flightless birds according to this theory.
Compare the two theories regarding the evolution of dinosaurs and then consider the cladogram above. Although the two theories differ on the evolutionary path of dinosaurs, they agree that
A) dinosaurs, reptiles, and birds had a common ancestor.
B) dinosaurs evolved much later than birds or reptiles.
C) the branch containing dinosaurs evolved before either reptiles or birds.
D) dinosaurs should be on the same main branch as snakes, lizards and crocodiles.
Biology
2 answers:
pentagon [3]3 years ago
7 0

I’d also say A. They both can agree that Dinosaurs, reptiles and avian birds all started from a common ancestor.

Anettt [7]3 years ago
4 0

Answer:

Explanation:

A, I may be wrong but here me out they both seem to agree that they had a common ancestor

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Help me please I am so confused
allsm [11]

Answer:

ECOLOGICAL FOOTPRINT

you would need about 41.6 earths all together

Explanation:

just add them up.

3 0
3 years ago
Given a population that contains genetic variation, what is the correct sequence of the following events under the influence of
GuDViN [60]

Answer:

2. A change occurs in the environment.

4. Poorly adapted individuals have decreased survivorship.

1. Well-adapted individuals leave more offspring than do poorly adapted individuals.

3. Genetic frequencies within the population change.

Explanation:

The natural selection theory was developed by Darwin to explain how evolution occur within a population. The environment is in constant state of changes and always select for organisms that are better adapted to it.

Poorly adapted organisms gradually reduce from the population as a result of decreased survival while well-adapted individuals multiply and contribute more to successive generation.

Well-adapted individuals pass on the adaptive alleles to their offspring, eventually leading to a change in gene frequencies within the population.

Hence, the sequence of events is 2, 4, 1 and 3.

8 0
3 years ago
During DNA replication, an open section of DNA, in which a DNA polymerase can replicate DNA, is called a replication fork. 2. Ok
Fiesta28 [93]

The question has been answered itself but the answer will contain the detail explanation.

Answer:

1. The replication fork formation during DNA replication is important for the continuity and the addition of the further base pair on the template. The DNA initiation process starts by the formation of replication fork.

2. The okazaki fragments are the short DNA fragments that are formed on the lagging strand. These fragments are later joined by the enzyme DNA ligase.

3. Leading strand is the continuous strand that formed during the DNA replication. The direction of the leading strand is 5' to 3' .

4. DNA polymerase is the main replicating enzyme during the DNA replication process. Different types of DNA polymerase with multiple subunits are present in prokaryotes and eukaryotes.

5. The new DNA that are formed from the parental strand and complementary with each other are called daughter DNA.

3 0
3 years ago
WILL GIVE A BRAINLEST
8_murik_8 [283]
We can rule out small fish and grasses. My guess is that zooplankton get their energy from phytoplankton, because phytoplankton use photosynthesis to get their energy.
7 0
3 years ago
Earthquakes are usually associated with _____.
Mekhanik [1.2K]
<span>b. faults 

Thank me if I was right!

Hoped it helped!
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</span>
5 0
3 years ago
Read 2 more answers
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