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In some lizard species, a short tail is recessive and a long tail is dominant. According to the principle of dominance:
a lizard with a TT genotype will have a short tail
a lizard with a tt genotype will have a long tail
a lizard with a Tt genotype will have a short tail
a lizard with a tt genotype will have a short tail
B. thickness of rock layers
C. fossil trees rings
D.plant pollens
Answer:
B.thickness of rock layers
can hear, so the owner knows his genotype is either DD or Dd. If the dog's genotype is
Dd, the owner does not wish to use him for breeding so that the deafness gene will not
be passed on. This can be tested by breeding the dog to a deaf female (dd). Draw the
Punnett squares to illustrate these two possible crosses. In each case, what
percentage/how many of the offspring would be expected to be hearing? deaf? How
could you tell the genotype of this male dog? Also, using Punnett square(s), show how
two hearing dogs could produce deaf offspring.
Answer:
50% with DD X dd / 50% with Dd x dd
Answer:
The most important factor was the accumulation of greenhouse gases, especially methane and carbon dioxide.
Explanation:
The Eocene climate began with warming climate at 56 million years ago (Mya) and finalized at around 49 Mya ago. It is believed that during this period the greenhouse gases increased the temperature on the Earth's surface. This hypothesis is supported by evidence that indicates the melting of the ice cap in the poles.
During the Eocene epoch, high levels of greenhouse gases like carbon dioxide caused a strong greenhouse effect and warmed the Earth's climate. Increased volcanic activity is one possible source of these gases. The continents' position also contributed to the warmer temperature by modifying ocean currents.
The Eocene epoch was characterized by significantly warmer global temperatures than today. This climate change occurred due to elevated levels of greenhouse gases in the Earth's atmosphere. One of the primary gases was carbon dioxide (CO2), possibly released by widespread volcanic activity. High levels of these gases trapped heat from the sun's rays within the atmosphere, a phenomena known as the greenhouse effect. Another contributing factor was the configuration of the continents, which amplified ocean currents' warming effect.
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