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
Nadya [2.5K]
3 years ago
10

1.) Species Y and Z have very different genes. Species A and B have only a few different genes. What is most likely true about t

hese species?
 A.) Species Y and Z are more closely related to each other than species A and B are to each other.
B.) Species A and B are more closely related to each other than species Y and Z are to each other.
C.) Species Y is the ancestor of species A and species Z is the ancestor of species B. D.) All four of these species are probably equally related to each other

2.) What is a molecular clock?
A.) a tool scientists use to dat fossils
B.) a tool scientist use to determine how many mutations a species accumulates over time
C.) a tool scientists use to determine how long two species have been evolving independently
 D.) a tool scientists use to determine how long it takes to sequence a strand of DNA

3.) What type of mutations do scientists look for in a molecular clock?
A.) mutations that increase fitness
B.) mutations that decrease fitness
C.) mutations that have no effect on fitness
D.) mutations that natural selection can work on

4.) How do scientists calibrate a molecular clock?
A.) they determine the number of mutations accumulated in a gene of species of known age
B.) they compare the ticking of the molecular clock with that of the atomic clock
C.) they use the clock that ticks at the appropriate rate for the divergence rate that they are trying ot calculate
D.) they compare the number of positive mutations that have occurred in a particular species with the number of negative mutations that have occurred
 
5.) A scientist wants to determine hen lions and house cats last shared a common ancestor. She should use a molecular clock that
A.) "ticks" faster than a molecular clock used to determine when mammals and amphibians last shared an ancestor
B.) "ticks" slower than a molecular clock used to determine when mammals and amphibians last shared an ancestor
C.) "ticks" at the same rate as all other molecular clocks
D.) consists of a gene that accumulates mutations

Just took this test the answers are as follows:
1.B
2.C
3.C
4.A
5.A
Biology
2 answers:
andreyandreev [35.5K]3 years ago
4 0
1. B
2. C
3. C
4. A
5. A
VikaD [51]3 years ago
4 0
The answer is B,C,C,A,A
You might be interested in
, which population(s) would be hurt if bears were added?
hoa [83]

The population(s) would be hurt if bears were added as bears are omnivores.

<h3>How do bears get the strength vitamins they need?</h3>

Plant ingredients make up the bulk of a bear's diet – every so often as plenty as ninety consistent with cent. However, fish and meat are vital reassets of protein and fat, aleven though maximum non-coastal bears depend upon carrion (along with winter-killed animals

  1. The maximum usually eaten styles of flowers are fleshy roots, fruits, berries, grasses, and forbs. If bears are at the hunt, their prey can consist of fish (particularly salmon), rodents like floor squirrels, carrion, and hoofed animals like moose, elk, caribou, and deer.
  2. They are particularly exact at catching the younger of those hoofed species. Grizzly bears also can goal home animals like farm animals and sheep and reason economically vital losses for a few ranchers.

Read more about population:

brainly.com/question/25896797

#SPJ1

4 0
1 year ago
What is the main type of energy used to help convert metamorphic rocks into igenous rocks in the rock cycle
nika2105 [10]
Meteorology because it is a metaphoric rocks
5 0
3 years ago
Which is the closest synonym for the word caravan? A Parade B Region C Breed D District
Firdavs [7]

Answer: A

Explanation:

Caravan is just a parade in a different font

7 0
3 years ago
Read 2 more answers
If Sarah had skin vesicles on the anterolateral region of her neck, which peripheral nerve is infected by the virus? To which pe
Alexus [3.1K]
It belongs to the cervical plexus
8 0
3 years ago
Population density is defined as?
Murljashka [212]
It is defined as well idk you gotta give me options man

4 0
3 years ago
Read 2 more answers
Other questions:
  • in humans, widow peaks are dominant to straight hairlines and freckles are dominant to no freckles. A woman who is homozygous fo
    13·1 answer
  • 1 puzzle time how did the man at the seafood restaurant cut his mouth answers
    8·1 answer
  • What is produced by the process of meiosis?
    10·2 answers
  • A multigravid client who is 10 cm dilated is admitted to the labor and birth unit. In addition to supporting the client, what is
    15·1 answer
  • Three alleles exist for coat color in rabbits: Cp, Ct, and Cz. A male Cp/Cz is crossed with a female Ct/Ct. Occasionally some ra
    5·1 answer
  • Most areas near the equator receive ___ solar energy than the poles receive<br> -more<br> -less
    15·1 answer
  • Speciation is the process by which new species are formed. Which of the following circumstances is most likely to lead to specia
    14·1 answer
  • Is the tube that carries blood, oxygen, and nutrients from the placenta to the developing child?
    9·1 answer
  • What is the process of VEGETATIVE PROPOGATION?? PLEASE HELP ME and Thank you so much!!
    12·1 answer
  • How long do scientists estimate that the sea has been at its current level?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!