Structures that allow for one-way blood flow through the heart

Which of these statements best describes what Charles Darwin observed on the Galápagos Islands? The finches on the islands were

yKpoI14uk [10]

The finch population on each island was unique. (correct statement) This is due to evolution, the finches beak size is a good example as the nuts on each island were different and the larger/smaller a beak was, it represented a change in the finch population so that they could break open the nuts easier.

6 0

3 years ago

Based on radiometric dating, the oldest rocks scientists have found on Earth are 4.6 billion years old, but not ALL rocks are th

natita [175]

Answer:

The answer to your question is below

Explanation:

Because similar to living things, some rocks are formed and it takes a long period to degrade them. During this period new rocks are born, some of these rocks can react with some compounds of the environment and can form new rocks or can be degraded.

What I try to say is that rock formation takes a lot of time and while some rocks disappear new rocks are created.

6 0

3 years ago

If glucose levels get too high in our body, what diseases may occur because of it?

ki77a [65]

Answer:

Hyperglycemia or high blood glucose

Explanation:

Hyperglycemia or high blood glucose occurs when there is too much sugar in the blood. This happens when your body has too little insulin (the hormone that transports glucose into the blood), or if your body can't use insulin properly. The condition is most often connected with diabetes.

Hope I helped

:)

5 0

2 years ago

Two fruit flies that are heterozygous for body color and eye color are crossed. Brown body color is dominant to black body color

Debora [2.8K]

Hi!

<h3>Let us assume that the following key:</h3>

<em>Brown Body Color</em> (Dominant) : B

<em>Black Body Color</em> (Recessive) : b

<em>Red Eye Color</em> (Dominant) : R

<em>Brown Eye Color </em>(Recessive) : r

To predict all possible phenotypes for this cross, you need to make a Punnet Square, which makes it easier to solve dihybrid crosses (crosses involving two different traits).

The concept of this is taking each combination of the traits from the parent (BR, Br, br, bR), and crossing it with such combinations of the other parent.

<em>Refer to the attached picture for clarity.</em>

This cross will yield a phenotypic ratio of

9 : 3 : 3 : 1

9 Dominant for both traits

3 Dominant for Eye Color, and Recessive for Body Color

3 Dominant for Body Color, and Recessive for Eye Color

1 Recessive for both traits

<h3><u>All Genotypes with Corresponding Phenotype:</u></h3>

BBRR - Brown Body, Red Eyes

BBrR - Brown Body, Red Eyes

BBRr - Brown Body, Red Eyes

bBRR - Brown Body, Red Eyes

BbRR - Brown Body, Red Eyes

BBrr - Brown Body, Brown Eyes

bBrR - Brown Body, Red Eyes

bBRr - Brown Body, Red Eyes

BbrR - Brown Body, Red Eyes

BbRr - Brown Body, Red Eyes

bBrr - Brown Body, Brown Eyes

Bbrr - Brown Body, Brown Eyes

bbRR - Black Body, Red Eyes

bbrR - Black Body, Red Eyes

bbRr - Black Body, Red Eyes

bbrr - Black Body, Brown Eyes

4 0

3 years ago

Read 3 more answers

When an allosteric enzyme is directly affected by a molecule that is not its substrate, this effect on the enzyme is called.

Mashcka [7]

When an allosteric enzyme is directly affected by a molecule that is not its substrate, this effect on the enzyme is called a heterotropic effect.

<h3>What is an allosteric enzyme?</h3>

Allosteric enzymes are catalysts that exhibit a site for binding that is distinct from the active site.

Allosteric enzymes are controlled by many effector compounds that can bind to different sites.

The active site of the enzyme is the molecular domain of this protein where reactants can bind during a chemical reaction.

The heterotropic effects occur when the ligands of allosteric modulators (effectors) are linked to the enzyme.

An allosteric modulator is a molecule that binds to the enzyme in a site different to the active site and this binding alters its tridimensional conformation, thereby activating it or deactivating it.

In conclusion, when an allosteric enzyme is directly affected by a molecule that is not its substrate, this effect on the enzyme is called a heterotropic effect.

Learn more about allosteric enzymes here:

brainly.com/question/13960033

#SPJ1

8 0

2 years ago