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Virty [35]
3 years ago
14

What marks the boundary between the mesozoic and the cenozoic (called the k-t boundary)?

Biology
1 answer:
VikaD [51]3 years ago
7 0
The Cretaceous mass elimination denotes the limit between the Mesozoic and Cenozoic times. It was a mass termination of some seventy-five percent of the plant and creature species on Earth that happened over a topographically brief timeframe for more than 66 million years. 
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In Drosophila, a developmental mutation called ssa (spineless aristapedia) results in flies with mini leg parts on the antennae.
34kurt

Given our understanding of genetics, we can confirm that the gene in question is of the homeotic type.

<h3>What is a gene? </h3>
  • In biology, we refer to a gene as the most basic unit of genetic information.
  • It is a segment of DNA that encodes for a certain trait that <u>may or may not be expressed.</u>
  • A gene carries the information for a specific trait, for example:

             1) Eye color

             2) Body organization

             3) Height

<h3 /><h3 /><h3>What does it mean for a gene to be homeotic?</h3>
  • In the case of this question, the gene in question is a homeotic gene.
  • Homeotic genes are those that are in charge of the organization of the organism's body.
  • These genes control the <u>general pattern of the body</u>, such as where the arms and legs will be, and so on.
<h3 /><h3 />

Therefore, given the definition of a homeotic gene, we can confirm that this is the type that best fits the description of the mutation in the question since it affected the formation and normal organization of the body.

To learn more about homeotic genes visit:

brainly.com/question/7991651?referrer=searchResults

4 0
2 years ago
1. Mike injured his knee while playing. Examination revealed that the injured area was red, swollen, and warmer than the surroun
xxMikexx [17]
1. Inflammation

2. Antibody

3.Thrombin

4. B cells are activated and release antibodies.
5 0
3 years ago
The first organisms on Earth were able to transform the carbon dioxide in the air into what essential element needed for modern
Len [333]
D. Oxygen  
We wouldn't be here without it
4 0
3 years ago
Read 2 more answers
With no herring to eat how might the eating habit of cod change
strojnjashka [21]
These people may end up eating something else or end up having a diet. They will have to find a new way to cope and get around in life than eating that kind of food that they wont have so they have to find other sources of food to stay alive and well 
6 0
4 years ago
How does aero and anaerobic respreastion differ
saveliy_v [14]
Aerobic respiration takes place in the mitochondria and requires oxygen and glucose, and produces carbon dioxide, water, and energy.

anaerobic respiration also produces energy and uses glucose but it produces less energy and does not require oxygen.
3 0
3 years ago
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