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Maru [420]
3 years ago
14

Which idea explains Darwin’s observations about Galapagos Islands finches?

Biology
1 answer:
Roman55 [17]3 years ago
8 0

Answer:

I think the answer is A) biological species concept

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The polymerase chain reaction has revolutionized genetics because
sineoko [7]

Answer: All of these

Explanation:

The polymerase chain reaction (PCR) revolutionized the field of molecular biology because PCR uses a small amount of DNA as a template.Paired with two primers which side to the target sequence, nucleotides, and thermostable DNA polymerase amplifies a specific region of DNA. In this way a large amount of DNA is obtained from a very small sample.

7 0
3 years ago
One of the products that a plant produces in photosynthesis
12345 [234]

Answer:

starch

Explanation:

In the presence of sunlight ,water,and oxygen the photosynthesis occurs .

As the by product of photosynthesis the starch or glucose(C6H12O6) is produce.

6 0
3 years ago
How are rainbow trout in Spirit Lake today different from those in other mountain lakes?
Novosadov [1.4K]
The correct option is this: THE TROUTS GROW FASTER BUT HAVE SHORTER LIFE SPAN.
Trouts live in fresh waters such as streams and lakes, they feed on microscopic organisms, small fish and insects. They have  a maximum length of about 35 inches and they are excellence sources of omega 3 fatty acids. Trouts have relatively short life span.
6 0
3 years ago
Read 2 more answers
Black fur in mice (
Tpy6a [65]
The answer is D) 1/2.

Let's imagine that two genes of the genotype can be analysed separately.

Black fur is determined by dominant allele B. In this case, parents Bb and BB will give offspring with only brown fur:
Parents:          Bb     x     BB 
Offspring:     BB   BB   Bb   Bb
Both homozygous (BB) and heterozygous (Bb) offspring will have black fur.

On the other hand, long tails are determined by recessive allele t. Parents Tt and tt will have 50% offspring with short tail and 50% offspring with long tail:
Parents:         Tt         x       tt
Offspring:    Tt      Tt        tt      tt
Heterozygous offspring (Tt) will have short tail, and homozygous offspring (tt) will have a long tail.

So, the offspring will definitely have black fur and will not affect the fraction of the offspring with black fur and long tails from the cross of <span>BbTt × BBtt. But, </span>there will be 2 out of 4 offspring with short tails which is 50% or 1/2. 
5 0
3 years ago
Please help .this is very important
Alex_Xolod [135]

Answer:

Mouth, stomach, liver, pancreas and small intestine.

Explanation:

If we eat these foods which have carbohydrates, its digestion starts from the mouth because the saliva present in the mouth mixes with the food and start its digestion. When the food reaches to the stomach, the foods are broken down into micromolecules with the help of enzymes secreted by liver and pancreas. After that the food goes to the small intestine where absorption of nutrients and water also occurs.

5 0
3 years ago
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