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Masja [62]
3 years ago
11

Dr. Adams is conducting a study about the relationship between short stature and shyness. Dr. Adams defines "short stature" as b

eing 2 or more inches below the average height for an adult of one's gender. Dr. Adams' description of shortness is an example of a(n) _____ definition.
Biology
1 answer:
Colt1911 [192]3 years ago
8 0
<h2>Operational definition</h2>

Explanation:

  • An operational definition is used to define the terms of a process which is needed to determine the nature of an item such or its properties such as quantity, chemical composition, etc.
  • The degree of operationalization vary.
  • Operational definitions can be defined as labels and concepts in the way they are measured.
  • For example: The operational definition of weight can be like this:
  • How many pennies are needed to balance the weight  of something.
  • When we hang something from a spring, how much a spring streches.

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47. This cladogram shows the evolutionary relationships among some mammals
Fed [463]

Complete question:

This cladogram shows the evolutionary relationships among some mammals based on  homologous structures.

(You will find the cladogram in the attached files)

Which statement is supported by this cladogram?

A Hippopotamuses are more closely related to cows than to javelinas.

B Toothed whales are more closely related to mouse deer than to hippopotamuses.

C Javelinas and pigs are more closely related than baleen whales and toothed whales.

D Cows and mouse deer are more closely related than javelinas and pigs.

Answer:

A Hippopotamuses are more closely related to cows than to javelinas.

Explanation:  

A cladogram is a branched diagram of characteristics shared by the organisms of a group, that represents the most probable evolutive history of the linage. Cladograms reflect the phylogenetic relationships among groups through phylogenetic trees.

In the phylogenetic tree, the taxonomic groups of interest are located in the extremes of the lines called branches. The ramification point, which is also called "node" or divergence point, represents the location of the most recent common ancestor.

The common ancestor position will determine how related are two species. If they have a recent common ancestor, they are closely related to each other. On the other hand, if the common ancestor is not recent and is located far away in the tree, then the two species will be less related to each other.  

A Hippopotamuses are more closely related to cows than to javelinas. TRUE. Hippopotamuses share a common more recent ancestor with cows than with javelinas. This means that the hyppopotamus is more related to cows than to javelinas. The arrows in the cladogram (attached file) show the positions of the common ancestor shared by Hippopotamuses and Cows, and the common ancestor shared by Hippopotamuses and Javelinas.  

B Toothed whales are more closely related to mouse deer than to hippopotamuses. FALSE. Tooth whales are more related to the hyppopotamus. Their common ancestor is more recent than the common ancestor between toothed whales and mouse deer. The arrows in the cladogram (attached file) show the positions of the common ancestors.

C Javelinas and pigs are more closely related than baleen whales and toothed whales. FALSE. They are equally related.  

D Cows and mouse deer are more closely related than javelinas and pigs.

FALSE. They are equally related.

8 0
2 years ago
Single maploid cell (with genetic normation from only one parend surrounded<br> hard outer wall
Misha Larkins [42]

Answer:  spore a single haploid cell (with genetic information from only one parent surrounded by a hard, outer wall.

Explanation:

3 0
3 years ago
Insectivorous birds are more likely to eat medium sized insects because the exoskeleton of large insects is too hard to break, a
andrey2020 [161]

Answer:

Option A: True

Explanation:

Insectivorous birds such as bluebirds, dippers and flycatchers prefer to eat medium-sized insects. This is because like most birds, they love easy and satisfying meals. To the birds, a medium-sized insect is a good compromise because it is quite easy to chew and digest and at the same time, easy to find.

As a result, most insectivorous birds prefer to get their daily ration of proteins from the medium-sized birds.

3 0
3 years ago
How might alterations in dna structure be harmful to an organism?
Thepotemich [5.8K]
Changes in the dna are called mutations. They can occur spontaneously. Mutations can only be passed down in gametes--sperm and egg cells. with Darwins theory at mind a mutation needs to pass the test of natural selection to remain in the gene pool. So purposly making mutation or altercations may end in diseases/illnesses or in some cases death because they body can not take it.....hope this helps if it doesnt im sorry!
5 0
3 years ago
What does solubility mean?
wolverine [178]
For example salt in water ,salt would dissolve ,you won't be able to see it but if you taste it it would still be there

dissolve /disappear but still be there
4 0
3 years ago
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