The core theme of biology which explains both the unity and diversity of life is

A student used poster board to construct this model of DNA.Which statement describes this model of DNA?

pantera1 [17]

Answer:

The model is inaccurate because the base pairs are incorrect.

Explanation:

The model of DNA that the student made was:

G-G

A-A

T-T

C-C

G-G

A-A

T-T

C-C

The model is pairing the bases incorrectly since guanine (G) forms a base pair with cytosine (C) and adenine (A) with thymine (T). In other words, the bases do not pair with the same type.

The DNA strands, which have deoxyribose, phosphate groups, and different bases, are together thanks to hydrogen bonds between the pairs. The pair G-C has three hydrogen bonds, while the pair A-T has two hydrogen bonds.

8 0

2 years ago

There are 100 cats in a population that follows hardy-weinberg conditions. 4 cats display a recessive white coat color. how many

mr Goodwill [35]

We know that Hardy-Weinberg conditions include the following equations:

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

where $p+q=1$

And where p = dominant, and q = recessive; this means that $p^{2}$ is equal to the homozygous dominant, $2pq$ is the heterozygous, and $q^{2}$ is the homozygous recessive .

So we have 100 total cats, with 4 having the recessive white coat color. That means we have a ratio of $\frac{4}{100}$ or 0.04. Let that equal our $q^{2}$ value.

So when we solve for q, we get:

$q^{2}=0.04$

$q=\sqrt{0.04} =0.2$

Now that we have our q value, we can use the other equation to find p:

$p+q=1$

$p+0.2=1$

$p=0.8$

So then we can solve for our heterozygous population:

$2pq=2(0.8)(0.2)=0.32$

This is the ratio of the population. So we then multiply this number by 100 to get the number of cats that are heterozygous:

$0.32*100=32cats$

So now we know that there are 32 heterozygous cats in the population.

8 0

3 years ago

A bird is flying in the air at a 4 m/s. If the mass of the bird is 7kg what is it’s kinetic energy

yaroslaw [1]

Answer: The kinetic energy of the flying bird is 56 Joules.

Explanation:

Mass of the bird = 7 kg

Velocity of the flying bird = 4 m/s

Kinetic energy of the bird will be given by :

$K.E.=\frac{1}{2}mv^2$

$K.E.=\frac{1}{2}\times 7 kg\times (4 m/s)^2=56 Joules$

The kinetic energy of the flying bird is 56 Joules.

4 0

2 years ago

Read 2 more answers

For which of the following pairs does the molecule given as the first term on the left contribute to the synthesis of

netineya [11]

Answer: B) amino acid - protein

Explanation:

5 0

2 years ago

Which phenomenon occurs when the sun crosses the plane of earth's equator

Evgen [1.6K]

The phenomenon is called an equinox. More specifically when it is September it is called the autumnal equinox ,and when it is March it is called the vernal equinox. Hope this helped!

6 0

3 years ago