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Andreyy89
3 years ago
13

How can DNA be used to illustrate that evolution has occurred?

Biology
1 answer:
Alexxandr [17]3 years ago
4 0

DNA can illustrate that evolution has occurred since in the process of natural selection advantegeous genes or traits have been selected to pass on through generations and further more evolve as long as the species survies and is successful in reproducing.

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One character in peas that Mendel studied was yellow versus green seeds.
weqwewe [10]

Answer:

Mendel was an Austrian monk whose researches laid the foundation of genetics. The experiments conducted by Mendel led him to the foundation of two laws which are named as the law of segregation and law of independent assortment.

According to the law of segregation, the two alleles of a gene segregate during the time of gamete formation and there are 50-50% chances of each of the alleles to be received by the gametes. Hence, there are 50% chances for Y gametes to be produced and 50% chances for y gametes to be produced.

3 0
3 years ago
Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human X chromosome. The patient
klio [65]

Answer:

One-half of the daughters of an affected man would have this condition.

Explanation:

Each daughter born to a woman that is positive for a dystrophin mutation on one of her two X chromosomes possess a 50 percent likelihood of possessing the mutation and also becoming a carrier. Carriers at times do not show the disease symptoms but may give birth to a child that has the mutation or the disease condition. DMD carriers do have a higher chance of cardiomyopathy.

A man with DMD cannot transfer the affected gene to his sons since he passes to his son a Y chromosome, not the X chromosome. But he will definately transfer it to his daughters, since each daughter possess her father’s only X chromosome resulting in the daughters being carriers.

Hence, One-half of the daughters of an affected father and a carrier mother could have this condition.

3 0
3 years ago
(02.04 HC)List an example of how an ecosystem can be affected by weather patterns. Explain how ocean temperatures affect weather
koban [17]
Tons of rain can cause an ecosystem to flood, killing species that are not meant to withstand lots of water. Ocean temperature can slow down or speed up evaporation, affecting precipitation rates.

Hope I helped!
~ Zoe

8 0
3 years ago
Read 2 more answers
Galaxies are ___________.
bixtya [17]

Answer:varied in size

Explanation:Galaxies vary in appearance. Galaxies differ greatly in size. Some contain as few as a hundred million stars, but the biggest have more than a trillion stars. Galaxies also vary in shape.

4 0
4 years ago
Read 2 more answers
Plenty of food, water and suitable temperature are the conditions required for the growth of fungi. Is it true or false?
jonny [76]
<h2><em>True</em></h2>

<em>Explanation:</em>

<em>Some species of fungi do grow better at warm temperatures (70-90°F), but there are some that thrive in very high temperatures of 130-150°F and some that will thrive in very low temperatures below 32°F (below freezing). ... Water: Fungi need lots of water to grow. For most fungi this is true. :)</em>

5 0
3 years ago
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