True or false New ideas are generated by curiosity, skepticism, open-mindedness, and creativity.

Describe two negative effects that water pollution can have on the environment. Explain one way water pollution can be reduced.

beks73 [17]

We cannot drink water and water can damage the ecosystem. Water pollution can be reduced by adding filters to rivers.

8 0

4 years ago

Cystic fibrosis is an autosomal recessive disorder. In one population, the frequency of affected individuals (A 2 A 2) is 0.0004

Simora [160]

Hardy Weinberg Equilibrium

Explanation:

Hardy Weinberg Equilibrium formula for allelic frequency is: $p+q=1$

Hardy Weinberg Equilibrium formula for genotypic frequency is: $p^2+q^2+2pq=1$

Here, $p$ =frequency of dominant allele

$q$ =frequency of recessive allele

$p^2$ =frequency of dominant genotype

$q^2$ =frequency of recessive genotype

$2pq$ =frequency of heterozygous genotype

frequency of affected individuals=0.0004(given)

here,affected individuals means the one's having Cystic Fibrosis and since it is recessive disease so we can write frequency of recessive genotype as: $q^2$ =0.0004

If $q^2$ =0.0004 $q$ will be 0.02;frequency of recessive allele will be 0.02

Using the formula $p+q=1$

$p+0.02=1\\p=1-0.02=0.98$

hence,frequency of dominant allele will be 0.98

Frequency of dominant genotype will be $p^2=(0.98)^2=0.9604$
Frequency of heterozygous genotype will be $2pq=2*0.98*0.02=0.0392$

7 0

4 years ago

How are the graphs of a body chemical controlled by negative feedback and a body chemical controlled by positive feedback simila

Anettt [7]

Answer:

brainliest plzzzzz

Explanation:

There is a proper mechanism of controlling the levels of various kinds of hormones and chemicals in our body called as positive feedback and negative feedback.

In a very simple language you can understand it as whenever there is a release of a particular hormone or chemical inside the body in very huge amount then the negative feedback of the body is activated the production of that particular hormone or chemical is stopped and vice -versa for negative feedback.

Explanation:positive feedback and negative both the feedback mechanism are achieved to maintain the proper homeostasis.

Example: release of clotting factor after blood loss is a positive feedback and a hormone is released and then suddenly there is a increase in hormone b, then the amount of hormone a will decrease this is a negative feedback.

7 0

3 years ago

What is the name of the solid part of Earth, including rock, minerals, and metals?

Korolek [52]

Answer:

Lithosphere is the name of the solid part of Earth, including rock, minerals, and metals.

8 0

4 years ago

Read 2 more answers

A phosphate group has the following chemical composition:

Kaylis [27]

Answer: The phosphate group has the chemical composition $-PO_{4}$ .

Explanation:

A phosphate group is a group where one phosphorus atom is attached to four oxygen atoms.

The oxygen atoms are attached to the phosphorus atom via single bond and one oxygen atom is attached to the phosphorus atom via double bond.

The chemical formula which represents a phosphate group is $-PO_{4}$ .

Thus, we can conclude that phosphate group has the chemical composition $-PO_{4}$ .

3 0

3 years ago