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kati45 [8]
3 years ago
14

What type of mutation do scientists look for in a molecular clock

Biology
1 answer:
liq [111]3 years ago
4 0
<span>Mutations that increase fitness is type of mutations do scientists look for in a molecular clock. </span>
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Scenario 1: In a class of 50 students, 18 take Chorus, 26 take band, and 2 take both Chorus and Band.
satela [25.4K]

Answer:

Sample size is 50

Explanation:

The sample size simply refers to the number of samples in our dataset

In this question, we are dealing with a total of 50 students

So what this mean is that the number if samples which is our sample size is the number 50

7 0
3 years ago
A heterozygous tall pea plant is allowed to self-fertilize. The resulting F1 progeny are 25% homozygous tall, 50% heterozygous t
maks197457 [2]

Answer:

25% heterozygous tall

Explanation:

If we take the F1 generation as parents and let them self-fertilise, we have 4 crosses.

The first one for homozygous tall, then we have 100% AA.

The second and third one for heterozygous tall and we have 25% AA, 50%Aa and 25%aa for each of them.

The last one would be for dwarf, and we'll have 100%aa.

Adding all of them, we'll have

AA = 100 + 25 + 25 = 150%

Aa =  50+50 = 100%

aa = 100 + 25 + 25 = 150%

as we had 4 crosses, so dividing the total percentages by 4, we'll have,

AA = 37.5%

Aa = 25%

aa = 37.5%

:. The percentage of heterozygous tall would be 25%.

Hope it helps:)

8 0
3 years ago
The inherited genes in these chromosomes contain DNA sequences that are related to particular what?
kicyunya [14]
Scientists first discovered chromosomes in the nineteenth century, when they were gazing at cells through light microscopes. But how did they figure out what chromosomes do? And how did they link chromosomes — and the specific genes within them — to the concept of inheritance? After a long period of observational studies through microscopes, several experiments with fruit flies provided the first evidence.
What is a gene?

Physically, a gene is a segment (or segments) of a chromosome. Functionally, a gene can play many different roles within a cell. Today, most scientists agree that genes correspond to one or more DNA sequences that carry the coding information required to produce a specific protein, and that protein in turn carries out a particular function within the cell. Scientists also know that the DNA that makes up genes is packed into structures called chromosomes, and that somatic cells contain twice as many chromosomes as gametes (i.e., sperm and egg cells).

But what were the key scientific discoveries that helped establish these principles? As it turns out, the connections between genes, chromosomes, DNA, and heredity were not recognized until long after researchers caught their initial glimpse of chromosomes. The following sections present an abbreviated summary of the major discoveries that revealed these connections.



please mark brainliest

4 0
3 years ago
Which is most likely the reason why there were no pink colonies seen on spread plate d?
Alenkinab [10]
<span>Here are the missing options for the above question:
</span><span>1. The bacterial culture in test tube D was diluted so much that no pink bacteria were left in the sample.

2. The pink bacteria were not able to get enough energy from the nutrient broth in test tube D to live.

3. The white bacteria outcompeted the pink bacteria for the nutrients in the broth in test tube D.

4. The pink bacteria are sediment growers in nutrient broth and the micropipette could not reach them.
</span><span>
It was about Spread Plate Method of Isolation with nutrient broth. Therefore the best answer choice is:

</span><span>1. The bacterial culture in test tube D was diluted so much that no pink bacteria were left in the sample.</span><span>

</span>
6 0
3 years ago
The overall purpose why plants perform photosynthesis is to
Alenkasestr [34]

Answer:

To make food for the plant.

Explanation:

6 0
2 years ago
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