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
MrMuchimi
3 years ago
11

T or F: natural selection is an observable fact

Biology
1 answer:
STALIN [3.7K]3 years ago
3 0

Answer:

I think it's True

Explanation:

Natural selection is theory that is backed by observable evidence.

You might be interested in
Which of the following statements about the DNA in one of your brain cells is true?
Sauron [17]

Answer:

C

Explanation:

The DNA in all the cells of an organism are the same. The reason there are different types of cells in the organism even through their DNA is the same is because genes are deferentially expressed in the cell types. The genes that are expressed in the brain cells are different from those expressed in the liver.  The rest of the genes that are not being expressed are silenced through folding by histones – so they are not exposed to DNA polymerase.

6 0
3 years ago
Question 49 not yet answered points out of 1.00 not flaggedflag question question text what sequence of events usually occurs in
Scrat [10]
B because of science books 
5 0
3 years ago
Which of the following is the largest and most inclusive of Linnaeus's taxonomic categories? A.Phylum B.Kingdom C.Family
Goryan [66]
K - Kingdom 
<span>P - Phylum </span>
<span>Crisps - Class </span>
<span>Only - Order </span>
<span>For - Family </span>
<span>Good - Genus </span>
<span>Students - Species. </span>

<span>They are all in order from largest to smallest. Hope that helps!</span>
4 0
3 years ago
Imagine you do a version of the Beadle-Tatum experiment in which you attempt to test the one-gene, one-enzyme hypothesis, but us
AysviL [449]

Answer:

They would be the enzymes that assimilate the presence of Q to generate a metabolism that encourages growth.

And also those that are X-forming, which is what is always present in cells.

Explanation:

Therefore, all the enzymes that assimilate the amino acid Q continue to function.

In simple words, in this situation, amino acid Q went from being a non-essential amino acid (because it was manufactured in-house) to being an essential amino acid (which, if or if, must be administered by the medium due to lack of own production in order to generate growth) .

7 0
3 years ago
Antennae development in ants is thought to be a trait controlled by maternal effect. In ants, zig-zag coils are dominant to curl
Schach [20]

Answer:

a. Her mother has zig-zag antennae.

b. Her brother has zig-zag antennae.

Explanation:

<u>Available data</u>:

  • Antennae development ⇒ controlled by maternal effect
  • Zig-zag coils are dominant
  • Curly coils are recessive
  • A female develops zig-zag coils

Maternal effect: Refers to the influence of the “environment provided by the mother” on the progeny phenotype. The mother´s genotype directly determines the progeny phenotype. Even though the progeny has a different genotype, it is irrelevant, as well as the father´s genotype or phenotype. This means that no matter what is the genotype of the offspring, all of them will express the same phenotype as their mother. The maternal effect is commonly seen in insects and might be seen in some mammals and plants.

So, if a female has zig-zag coils, this means that the mother also has zig-zag antennae and that all the brothers and sisters of this female ant have zig-zag antennae, independently of their genotype.

a. Her mother has zig-zag antennae ⇒ True. The trait is inherited from the mother.  

b. Her brother has zig-zag antennae ⇒ True. The whole progeny will express sig-zag antennae.

c. This female carries the zig-zag allele ⇒ Not necessarily.

d. This female's offspring will have zig-zag antennae ⇒ Depends on it´s genotype

3 0
3 years ago
Other questions:
  • Where can you find a biodiversity hotspot
    9·1 answer
  • - 4x + 5y = - 36<br>15x – 3y = 32​
    12·1 answer
  • What are the biotic and abiotic factors of the Sahara desert.
    13·1 answer
  • Which of the following types of energy is made from plant materials? biofuels biomass hydroelectric solar
    14·2 answers
  • What food chain is there from the movie Finding Nemo?
    5·1 answer
  • The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle.
    11·1 answer
  • Look at the picture and observe below. Observations: The bee's wings are moving very fast. The bee's wings are much smaller than
    9·2 answers
  • In The Origin of Species, Darwin argued that the mechanism of descent with modification was ________. In The Origin of Species,
    15·1 answer
  • I need help on this and please.
    11·1 answer
  • Match the science with the best description.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!