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3 years ago

Biology Help. 6 questions?

1 answer:

5 0

Check the answers below:

• Genetic Drift refers to the change of the frequencies of allele due to some random events• All the choices are correct.• The answer is true.• Other term for reinforcement is dispersive selection• The populations of birds will not be able to interbreed because they are different species.• The fitness of the large-beaked birds will increase and also it increases to possibility of creating new species.

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Why did Charles Darwin predict that tetrapods evolved from fish?

qwelly [4]

Answer:

fish and tetrapods are both vertebrates that have a backbone with a spinal cord. fish lived before tetrapods because their fossils are in rocks over 500 million years old.

Explanation:

fish and tetrapods are both vertebrates that have a backbone with a spinal cord

8 0

2 years ago

In the scenario above, Red hair (R) is dominant to blonde hair (r). If two parents are

Taya2010 [7]

75 percent will have red hair and 25 percent will have blonde :)

6 0

3 years ago

When the left ventricle contracts, blood flows to the _____.

Scorpion4ik [409]

Answer:

aorta

Explanation:

The aorta and its branches carries the blood to all the body's tissues.

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2 years ago

Read 2 more answers

The introduction of invasive species to an ecosystem can change the dynamic of the among the species

myrzilka [38]

Answer:

yes

Explanation:

8 0

3 years ago

In garden peas, tall (T) vine is dominant over short (t) vine, and round pea pod (R) is dominant over wrinkled pea pod (r). Cro

Aleksandr [31]

Answer:

Explanation:

Given:

Traits

T (tall, dominant) and t (short)

R (round, dominant) and r (wrinkle)

Crossing parents

hetero-zygous. tall wrinkled (Ttrr)

phenotype tall is given hetero-zygous., so Tt

phenotype wrinkled is recessive, so must be homo-zygous rr

Foiled genotypes (Tr, tr, each with 50%)

short hetero-zygous. round (ttRr)

phenotype short is recessive, so homo-zygous rr

phenotype round is given heteroz. so Rr

Foiled genotypes (tR, tr, each with 50%)

Offsprings on a 4x4 punnett square

See diagram

6 0

2 years ago