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
andre [41]
3 years ago
9

Pertaining to natural selection, this is a measure of the relative reproductive success of individuals. It can be measured by an

individual's genetic contribution to the next generation compared with that of other individuals. A. natural selection B. traits C. selective pressures D. fitness
Biology
1 answer:
SashulF [63]3 years ago
5 0

Answer:

The correct answer is D. fitness

Explanation:

The ability of an organism to survive up to reproductive age and produce its offspring is called biological fitness. The fitness of any individual can be measured by the genetic contribution of that individual into the next generation.

This means that the higher the number of offspring produced by any individual higher would be its biological fitness. By averaging the fitness of population members the fitness of a population can be calculated. So fitness is the correct answer.

You might be interested in
Consider the evidence that explains how physical separation of two populations of a species can cause speciation. What effect do
Tom [10]

Answer:

  • Interruption in the genetic flow between separated groups
  • The emergence of new mutations in each of the groups, and their accumulation in time. Slow and gradual differentiation between populations.
  • Genetic divergence by natural selection and reproductive isolation
  • Prezigotic isolation mechanisms

Explanation:

Allopatric speciation consists of the geographic separation of a continuous genetic background that can give place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flux, as the two new groups that are separated can not get together and mate anymore. These barriers might be geographical or ecological.

The process of allopatric speciation involves different steps that affect organisms:

  • The emergence of the barrier.
  • Interruption in the genetic interchange
  • The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
  • Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.
  • Prezigotic isolation mechanisms will be favored by selection if occurs a secondary contact between the new species in formation.
4 0
2 years ago
If thymidine dimers created by UV irradiation persist until DNA replication, DNA polymerase is likely to make a mistake reading
marishachu [46]

Answer:

Thymidine dimers is likely to be repair as soon as it is originated but if left unrepaired then it causes  frame shift mutations.

Explanation:

In case of Bacterium if UV irradiation induces covalent linkage of two thymidine present adjacently to each other or on a single strand to make thymidine dimers.

These either excised via DNA repair enzyme like Endonuclease V and the proof reading activity of DNA polymerase I enzyme help in incorporation of nucleotide by taking the unmutated original strand as a template.

These dimers if not excised before second round of replication than the sequence of newly synthesized strand will be altered. As DNA polymerase III enzyme read thymidine dimers as single thymidine nucleotide and incorporate only 1 adenine in the newly synthesizing complementary strand which results in frame shift mutations

It is the mutation in which reading frame of codons is shifted or altered due to deletion or addition of a single nucleotide.

7 0
3 years ago
Animal cell map to understand how cells function as the fundamental unit of life, you must first become familiar with the indivi
kodGreya [7K]

Answer:

a-synthesizes lipids

b-assembles ribosomes

c-defines cell shape

d-produces secretory proteins

e-modifies and sorts proteins

f-digests proteins

g-generates ATP

Explanation;

Some organelles and structures that make up the cell include; mitochondria, ribososmes, cell membrane, endoplasmic reticulum, golgi apparatus, lysosomes, among others,

-These organelles play individual roles in the cell; For instance;

Mitochondria-generates ATP

Lysosomes; digests proteins and worn out organelles

Golgi apparatus; modifies and sorts proteins

Ribosomes; Produces proteins

Endoplasmic reticulum; sythesis of lipids

Cytoskeleton; it gives the cell its shape

Nucleolus; manufactures and assembles ribosomes

etc.

7 0
3 years ago
49. A test for starch in variegated leaves shows the importance of
leva [86]

Answer:

D. Chlorophyll

Explanation:

Chlorophyll is important as it allows the plant to convert carbon dioxide and water into glucose.

7 0
3 years ago
Read 2 more answers
When cells are metabolically active but not dividing, they are in the ________ phase. when cells are metabolically active but no
Mars2501 [29]
The answer is lag. The number of bacterial cells doubles at a constant, exponential rate during log phase, while growth rate and death rate are the same during stationary phase. The fourth phase is the death phase, when the rate of cell death is faster than the population growth. 
3 0
3 years ago
Read 2 more answers
Other questions:
  • How are small leaves an adaptation in a desert environment?
    11·1 answer
  • Explain the light-dependent and light-independent reactions that occur in photosynthesis. plz, help brainliest for best. not mul
    14·1 answer
  • How do your bones and muscles work together to move ?
    7·2 answers
  • Which is NOT true of eukaryotic cells?
    9·1 answer
  • The table below shows the number of people who scheduled multi-day fishing expeditions leaving from Florida in 2009.
    9·2 answers
  • The traits for blood type and Rh are the result of the presence or absence of particular on the erythrocytes.g
    12·1 answer
  • Which of the following statements presents a reasonable conclusion?
    5·2 answers
  • What are three ways human traits are controlled​
    8·1 answer
  • Lakes rivers and streams are included in what type of water
    14·1 answer
  • If a person uses up his or her reserve supply of glycogen and still does not eat, sugar comes from the?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!