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3 years ago

Give two reasons that the rat population is not a hardy Weinberg equilibrium

Biology

2 answers:

eduard3 years ago

8 0

Rats are seen barely by Humans.
The Only thing the same as rats are mole

Mumz [18]3 years ago

4 0

1. The population is under selection pressure from predators
2. Hey now, no population is ever at H-W equilibrium: 
mutations happen 
immigration and emigration can occur 
the population is not huge, which means that genetic drift can happen 
mating is not completely random -- a rat is more likely to mate with someone local than with someone living in Paris, France. 

b) The small rats will be selected for (assuming there are predators in this ecosystem that are less likely to look in bushes, and further assuming that the small rats do not have reduced fertility by dint of being small) 
This is "directional selection" 

c) I would expect the "smallness" allele frequency to increase in this population over time, and the "normal size" allele frequency to decrease.

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differentiate between Picture Plant mushroom and order on the basis of stem leaf and water requirement

Radda [10]

Answer:

A exchange of gases between the leaf and the atmosphere

Bloss of water vapour from the leaves and stems of a plant

movement of water from the roots to the leaves

movement of water through the cells of the leaf

hope this helped if not sorry i tried

Explanation:

8 0

2 years ago

Insects shows considerable powers of water conservation through

Genrish500 [490]

Answer:

Explanation:

As Insects excrete uric acid and it require 1 gram of water for its excretion so it conserve water in this way

8 0

2 years ago

PKU (Phenylketonuria) is an autosomal recessive disease, in which the synthesis of amino acid Tyrosine from Phenylalanine is blo

prisoha [69]

To calculate the frequency of the heterozygote genotype (Pq) for this gene we must use the Hardy-Weinberg equation ( p2 + 2pq + q2 = 1 ). This equation relies on the Hardy-Weinberg principle, a model in population genetics that states that the frequency of the alleles in a population is never changing, only the combinations (the genotypes) are changing.

If there are only two alleles (variations) of this gene in a population, then their frequencies should add up to 1 (100%). From this, we can calculate the frequency of the q allele.

p +q=1

0,3 +q=1

q= 1-0,3

q= 0,7

Now hat we have the frequency of the q allele we can use the HW equation to calculate the frequency of the heterozygotes.

$p^{2} + 2pq + q^{2} = 1$

$(0,3)^{2} + 2pq +(0.7)^{2} = 1$

0,09 + 2pq +0.49= 1

2pq +0,58= 1

2pq= 1-0.58

2pq=0,42

The freqency of the heterozygotes in this population is 0.42

6 0

3 years ago

What does theory mean to a scienist?

Rama09 [41]

A theory is a set of sentences which is closed to make logical implications.

6 0

2 years ago

Read 2 more answers

The Griffith experiment showed that certain strains of Streptococcus bacteria could transform from one strain to another when co

AnnZ [28]

Answer:

The options

A. It suggested that DNA is the

"transforming principle."

B. It confirmed that DNA is a double helix composed of two antiparallel strands.

C. It demonstrated that DNA consists of four nucleotides where the proportions of adenine/thymine and cytosine/guanine remain constant.

D. It proved that DNA is

semiconservative replication.

The CORRECT ANSWER IS A.

A. It suggested that DNA is the

"transforming principle."

Explanation:

A. It suggested that DNA is the

"transforming principle."✔

Griffith's experiments proved

that transformation can be seen in

pneumococcus, but gave no proof based on what molecular background the transformation was

WHILE, the Avery MacLeod-McCarty experiments proved that DNA was THE TRANSFORMING PRINCIPLE.

B. It confirmed that DNA is a double helix composed of two antiparallel strands.❌

These findings were established by James Watson, Francis Crick, Maurice Wilkins and Rosalind Franklin

C. It demonstrated that DNA consists of four nucleotides where the proportions of adenine/thymine and cytosine/guanine remain constant.❌

The findings was established by Erwin Chargaff.

D. It proved that DNA is semiconservative replication.❌

The findings was established by Matt Meselson and Franklin Stahl.

5 0

3 years ago