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
STatiana [176]
4 years ago
8

The first mammals evolved during the _____ Period.

Biology
2 answers:
WARRIOR [948]4 years ago
7 0
They were during Triassic period
SCORPION-xisa [38]4 years ago
6 0
The first mamals evolved even before the dinosours during the Triassic <span>period</span>
You might be interested in
Which side of the heart contains only deoxygenated blood? Only oxygenated blood?
lozanna [386]

Answer: The right ventricle receives deoxygenated blood, The left ventricle receives oxygenated blood from the left atrium

Explanation:

3 0
3 years ago
True or false t and b cells are two tyoes of red blood cells
jeka57 [31]

the answer is true not false i think

3 0
4 years ago
In garden peas, long stems are dominant to short stems, and yellow seeds are dominants to green seeds, too long/yellow pea plant
Lera25 [3.4K]

Answer:

A) 300

B) 3:1

C) 9 long yellow : 3 long green : 3 short yellow : 1 short green

Explanation:

Long stems (L_) are dominant to short stems (ll)

Yellow seeds (Y_) are dominant to green seeds (yy)

We interbred pea plants with long stems and yellow seeds (L_Y_), but they had a short green parent (llyy) that could have only produced <em>ly</em> gametes, so our plants are heterozygous <em>LlYy</em>.

C) We interbred them LlYy x LlYy. If the two genes are unlinked, this is a typical dihybrid cross and from Mendel's law of independent assortment we know that the offspring will have the following phenotypic ratios:

  • 9/16 L_Y_ (Long, yellow)
  • 3/16 L_yy (Long, green)
  • 3/16 llY_ (short, yellow)
  • 1/16 llyy (short, green)

A) 3/16 × 1600 = 300 plants will be long and green.

B)

9/16 + 3/16 = 12/16= 3/4 plants will be yellow;

3/16 + 1/16 = 4/16= 1/4 plants will be green.

The ratio will be 3 yellow : 1 green

6 0
4 years ago
Identify the structures of the four____ found in living
jonny [76]

Answer:

Organic Molecules

Explanation:

8 0
3 years ago
What happens when a joint swells up?
inna [77]
It could be Infectious Arthritis. It happens when an infection, caused by a bacteria, spreads to the joint or the fluid surrounding it.
7 0
4 years ago
Other questions:
  • Francesco redi performed an experiment in 1668. in the experiment, he placed rotting meat in two jars. the first jar was left op
    6·1 answer
  • You have isolated a new mutation in the T4 bacteriophage rII A gene and you map its location within the gene by recombination fr
    15·1 answer
  • What is one of the main factors contributing to irritable bowel disease?
    6·1 answer
  • Thoughts and feelings affect how the cells function according to
    13·1 answer
  • What happens in DNA replication after the original strand has separated?
    14·2 answers
  • What is the jellylike interior of the cell called?
    6·2 answers
  • 3. Which of the following statements best explains the purpose of Mitosis?
    7·2 answers
  • Based on what we have learned so far about the cardiovascular and respiratory systems, blood pH should be lower in the ___ compa
    10·1 answer
  • Which one is the odd one out in these sets fern, conifer and moss​
    10·2 answers
  • what does the term 2pq represent in the hardy-weinberg equation? the frequency of homozygous recessive individuals the frequency
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!