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nikklg [1K]
3 years ago
15

True or false. The absence of a trait cannot be used as a synapomorphy in phylogenetic analysis

Biology
1 answer:
kolbaska11 [484]3 years ago
4 0

Answer:

False

Explanation:

Phylogenetic analysis is a means of establishing evolutionary relationships.

Synapomorphy is a shared ("syn") character that is different from the form found in an ancestor that distinguishes a clade (monophyletic group)from other organisms

The absence of a trait can be used as a synapomorphy in phylogenetic analysis. For example, the loss of a trait, such as the loss of legs in snakes, can be a valuable synapomorphy for a clade.

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Coal-fired power plants release emissions such as nitrogen compounds into the air. The nitrogen and water cycle combine when nit
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C) This mutation is a recessive trait. What is the likelihood that a woman who does not possess the sickle cell trait and a man
maks197457 [2]

What is Sickle cell anemia?

Sickle cell is an autosomal recessive trait of humans that arises through mutation in normal gene. The gene for this trait is found in recessive form and you need two copies of the gene - one from father and one from mother- to have the trait expressed. If the trait is expressed it causes a disease called sickle cell anemia.

People with the sickle cell anemia disease have red blood cells of crescent or sickle shape. The red blood cells of this shape can cause many complications in body. They get stuck in blood vessels and cause pain. They also die quickly and make a person anemic (pale).

Probability to have a child with sickle cell anemia:

If a mother is normal but a father is carrier for the trait,  then the situation will be as:

Here N indicate normal allele, S indicate allele for sickle cell anemia.

                                    Mother           ˣ                            Father

                                      NN                                                 NS

Gametes:            N             N                                  N                S

Offspring:           NN             NS                             NN                     NS


                                                50% :                  Normal

                                                50% :                  Carrier

                                                0%    :                 Sickle cell anemia

It means that 50 % kids will be normal and 50% will be carrier for the trait and none of the offspring will have disease Sickle cell anemia. However, those who are carriers can carry the disease to the next offspring if they are married to a carrier or a person with sickle cell anemia.


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3 years ago
Which biomolecule has CHO and can be found in a ring form?
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Which eocene organisms had clear primate characteristics like a postorbital bar, opposable thumbs, nails, and a large brain?
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The adapids were lemur like primates and the omomydids which includes the probable ancestors of apes and monkeys and Tarsiidae (tarsiers). They are organisms of the eocene epoch present about 34 to 55 million years ago.

They are considered to be the early primates. Their primates characteristics are forward oriented eyes, postorbital bar, opposable thumbs, nails, large brain and adaptation to live in the tree.

To learn more about primate characteristics here

brainly.com/question/28024455

#SPJ4

6 0
2 years ago
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