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Sindrei [870]
3 years ago
11

What evidence does a fossil record provide?

Biology
1 answer:
Nadya [2.5K]3 years ago
7 0

Answer:

Fossils provide solid evidence that organisms from the past are not the same as those found today; fossils show a progression of evolution. Fossils, along with the comparative anatomy of present-day organisms, constitute the morphological, or anatomical, record.

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Huntington's disease is an inherited autosomal dominant disorder that can affect both men and women. Imagine a couple has had se
Vanyuwa [196]

1. The percent probability that the first child of the couple will have Huntington's disease is 50%

2. The percent probability that four of the seven children will have Huntington's disease is 6.25%

<h3>Genetical probabilities</h3>

The disease is autosomal dominant. Only one dominant allele is needed for the disease to be manifested.

The husband is Hh and the wife is hh.

            Hh    x     hh

         Hh   Hh   hh   hh

Hh (affected) = 1/2

hh (unaffected) = 1/2

1. Probability that the first child of this couple will have Huntington's disease is the same as the probability of having the disease. Thus, it is 1/2 (50%)

2. Probability that four of the seven children will have Huntington's disease is the same as the probability of having the disease in 4 places.

  1/2 x 1/2 x 1/2 x 1/2 = 1/16 or 6.25%

More on genetic probabilities can be found here: brainly.com/question/13764507

#SPJ1

7 0
2 years ago
1. Two atoms are the same element if they have the same
-BARSIC- [3]

Answer:

Same number of neutrons.

Explanation:

What defines an atom as a certain element is the number of neutros in its nucleus. Some atoms have a different number of neutrons, but are still the same element, we call these variants "isotopes".

Hope it helped,

BiologiaMagister

3 0
4 years ago
Read 2 more answers
You visit a huge city with millions of people. If you were to start sampling the cystic fibrosis allele from one generation to t
lys-0071 [83]

Answer:

The frequency would be stable.

Explanation:

Based on the most common symptoms of cystic fibrosis, the disease only appears on adults and elderly. This feature means that the frequency of the disease would not drop or raise because they would still reproduce and pass the allele from generation to the next, maintaining the frequency stable.    

6 0
3 years ago
Many critical nutrients in our food come in the form of biological macromolecules. what are macromolecules?
kotykmax [81]

The four main biological macromolecules are lipids, proteins, nucleic acids, and carbohydrates. The term "macronutrient" particularly refers to the macromolecules that give the organism its nutritional energy.

<h3>What are biological macromolecules?</h3>

Large, naturally occurring cellular components known as biological macromolecules perform a variety of vital tasks for the development and survival of living things. There are four significant categories of biological macromolecules: lipids, proteins, nucleic acids, and carbohydrates.

Proteins, nucleic acids, and polysaccharides are typical examples of macromolecules.

Macromolecules are enormous molecules that fill a cell and give it vital life-sustaining activities. Macromolecules, for instance, offer structural support, serve as a reservoir for stored energy, have the capacity to store and retrieve genetic information, and can speed up biological operations.

learn more about macromolecules refer

brainly.com/question/17239913

#SPJ4

3 0
2 years ago
Question 15
scoray [572]

C is the answer..........

4 0
2 years ago
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