1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
EastWind [94]
3 years ago
5

During which period did the first true mammals appear?

Biology
2 answers:
Vedmedyk [2.9K]3 years ago
5 0

Answer:

the answer is Jurassic Hopefully this helps!

Serggg [28]3 years ago
3 0
<span>During JURASSIC period the first true mammals appear.</span>
You might be interested in
Q:- You may have heard through various media of an animal alleged to be the hybrid of a rabbit and a cat. Given that cat (Felis
weeeeeb [17]

Answer:

41 chromosomes

Explanation:

Cats have a dipoid chromosome number of 38, <u>so their gametes will have half that number: an haploid number of 19 chromosomes</u>.

Rabbits have a dipoid chromosome number of 44, <u>so their gametes will have an haploid number of 22 chromosomes</u>.

When a cat gamete (n=19) joins with a rabbit gamete (n=22) to form the hybrid zygote, it will have 19+22=41 chromosomes. When it undergoes mitotic division, all its somatic cells will have 41 chromosomes.

6 0
3 years ago
What do proteins nucleus acids and carbohydrates all have in common
BabaBlast [244]

Nucleic acids also typically contain phosphorous, and nitrogen plays an important structural role in nucleic acids and proteins. The proteins, being made up a diverse set of amino acids, have, in addition to carbon, hydrogen, oxygen, and nitrogen, the elements sulfur and selenium.

3 0
3 years ago
Read 2 more answers
How could an endocrine system disorder affect the respiratory system?
kifflom [539]
Answer: B. It could disrupt the rate of respiration

In a way, a disorder in the endocrine system may affect the respiratory system of a person. This is due to the fact that an endocrine condition may directly affect the respiration of a patient. 

5 0
3 years ago
Over 400 years ago, the bark of the cinchona tree was discovered to contain a chemical compound called quinine. Quinine was, and
evablogger [386]

Answer:

a

Explanation:

5 0
3 years ago
A brief contraction of all muscle fibers in a motor unit in response to a single action potential moving down the somatic motor
ad-work [718]

Answer:

Muscular tissue

7 0
3 years ago
Other questions:
  • What happens when too much water enters an animal cell via osmosis
    12·1 answer
  • List the three function of an arthropod exoskeleton
    10·1 answer
  • What is the average lifespan of a bone marrow cell?
    5·2 answers
  • 1. What was the worldwide avemge life expectancy in 2000?
    10·1 answer
  • Imagine another gas giant was found in our solar system. It is greenish and has a giant spot on one side. Which of these stateme
    8·1 answer
  • Which of the following is not true about sedimentary rocks?
    6·1 answer
  • About how long ago did our solar system start to form?
    10·1 answer
  • Tess has second- and third-degree burns on her arms and face. explain why the burns that tess suffered make her very susceptible
    9·1 answer
  • Which one of the following is a microbe
    11·1 answer
  • Select all that apply. Select the true statements about Eubacteria. Most live as decomposers and heterotrophs. Most only thrive
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!