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wolverine [178]
3 years ago
15

1. Order the organisms from the least recent to most recent to evolve: bacteria, reptiles,

Biology
1 answer:
zvonat [6]3 years ago
7 0

Explanation:

Bacteria, fish, amphibians, insects, Dinosaurs and mammals

You might be interested in
Use the information in the table to answer the question.
Viefleur [7K]

The list which shows the acidic solutions in order from least conductive of electricity to most conductive is HA, HC, HB

The pH of a solution is defined as the negative logarithm of the hydrogen ion concentration of the solution.

The higher the hydrogen ion concentration, the lower the pH of that solution whereas, the lower the hydrogen ion concentration of a solution the higher the pH of that solution.

In solutions, ions are responsible for electrical conductivity. Therefore, an acid solution with low pH or high hydrogen ion concentration will conduct electricity better.

In the given acidic solutions, HA, HB and HC, the order from least electrical conductivity (highest pH) to most electrical conductivity (lowest pH) is:

HA, HC, HB with pH 5.6, pH 4.7 and pH 3.9 respectively.

The other arrangements: (HA, HB, HC), (HB, HC, HA), and (HC, HB, HA)

are wrong because they do not follow the order of decreasing pH.

Learn more: brainly.com/question/17170587

5 0
2 years ago
Why are scientists not able to agree on whether or not viruses are alive?
EleoNora [17]

Answer:

A .Viruses cannot evolve but can infect living cells.

7 0
2 years ago
The ABO blood group has three alleles (A, B, O). If a woman with genotype AO mates with a man with genotype BB, the expected pro
blagie [28]

Answer:

C. 100 percent

Explanation:

The woman is heterozygote: AO, while the man is homozygote: BB

By crossing the two:

AO   x  BB

A+B, A+B, O+B, O+B

AB, AB, OB, OB

We have two AB and two OB offspring. Both AB and OB are heterozygotes.

Thus all their offspring will be heterozygous.

<em>Had the question asked what proportion will be OB, the answer would have been 50%.</em>

Since the question asked, what proportion will be heterozygotes and not about the specific genotype, the correct answer is C. 100 percent

6 0
3 years ago
Which statement is true about crocodilians? Check all that apply.
Dafna1 [17]

Answer:

all are true and i fact checked

Explanation:

5 0
3 years ago
Consider two different traits in mice affecting tail length and fur color. A two-factor cross was made involving true-breeding m
Stells [14]

Answer:

See the answer below

Explanation:

Null hypothesis: The two genes are independently assorting and therefore, are not linked to each other.

Let A represents the allele for tail length and B for fur color. Long-tail A is dominant over short tail a while brown fur B is dominant over white fur b.

For the first cross involving true-breeding mice:

    AABB   x   aabb

F1         AaBb (long tails and brown fur)

For the second cross:

      AaBb   x   aabb

4 AaBb - Long-tail, brown fur

4 Aabb - Long tail, white fur

4 aaBb - short tail, brown fur

4 aabb - short tail, white fur

Since the phenotypic ratio from the cross is 1:1:1:1, if the null hypothesis was to be true, it means that the expected phenotype ratio should be 1:1:1:1.

In order to test this hypothesis, we use Chi-square:

phenotype                           O            E                 X^2  

Long-tail, brown fur           118          97.5        \frac{(118-97.5)^2}{97.5} = 4.31

Long tail, white fur              77           97.5             4.31

short tail, brown fur             81           97.5              2.79

short tail, white fur              114           97.5              2.79

Total                                                                          14.2

Degree of freedom = 4 - 1 = 3

Critical Chi-square value = 7.815

The calculated Chi-square value is more than the critical value, hence, the null hypothesis is rejected.

8 0
3 years ago
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