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
Sholpan [36]
3 years ago
13

You know that the narrow-sense heritability of milk production in Ayrshire cattle is 0.587. You perform an experiment where you

take a parental population of cattle with a mean milk production of 5.1L/hr and selectively breed only the top 10% of cows in this population, who have a mean milk production of 8.9L/hr, what is the response to selection (R) in your experiment
Biology
1 answer:
Paha777 [63]3 years ago
3 0

Answer:

Explanation:

Narrow sense heritability - h​​​​2

​​​​​​selection differential - S

Selection differential is calculated from the difference between the population average and the parental population.

Breeder's equation:

Response to selection - R = h​​​​​​2S

Mean milk production of 10% cows for experiment = 8.9L/hr

Mean milk production of parental population = 5.1L/hr

Selection differential S= 8.9 - 5.1 = 3.8 L/hr

Response to selection = 0.587 × 3.8 = 2.23

You might be interested in
Complete the sentences to describe natural selection
Vikentia [17]
  1. The environment needs to change in order to natural selection to occur.

Reason:

Because, Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

2. Population has some genetic variations.

Reason:

Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population. Genetic variation is caused by:

mutation and random mating between organisms

3. Nature select organism with specific traits to survive and reproduce.

Reason:

According to Charles Darwin's theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.

6 0
3 years ago
Which of the following is not a difference between DNA and RNA?
bazaltina [42]

Answer: DNA contains alternating sugar-phosphate molecules whereas RNA does not contain sugars

Explanation:

5 0
2 years ago
A certain buffer is made by mixing a weak acid HA and its conjugate base A–. When HA is present at a concentration of 0.5 mM and
MAVERICK [17]

Answer:The ratio of the concentrations of HA  and A^- when the buffer has a pH of 7.02 is 0.69

Explanation:

The dissociation constant for formic acid = K_a=1.8\times 10^{-4}

Concentration of HA= 0.5 mM

Concentration of A^-= 0.1 mM

pH = 6.16

First we have to calculate the value of K_a.

Using Henderson Hesselbach equation :

pH=pK_a+\log \frac{[A^-}{[HA]}

Now put all the given values in this expression, we get:

6.16=pK_a+\log (\frac{[0.1]}{0.5})

pK_a=6.86

To calculate the ratio of the concentrations of HA  and A^- when the buffer has a pH of 7.02.

Using Henderson Hesselbach equation :

7.02=6.86+\log \frac{[A^-]}{[HA]}

7.02=6.86+\log \frac{[A^-]}{[HA]}

\frac{[A^-]}{[HA]}=1.44

\frac{[HA]}{[A^-]}=0.69

Thus the ratio of the concentrations of HA  and A^- when the buffer has a pH of 7.02 is 0.69

7 0
3 years ago
Which of the organisms listed is most likely to contain genes encoding enzymes that can fix carbon from co2?
Dimas [21]

There are a few different organisms that could potentially contain genes encoding enzymes that can fix carbon from CO2. However, one of the most likely candidates would be plants. Plants have a unique ability to convert CO2 into useful organic compounds, and they typically have a large number of genes encoding enzymes involved in this process. Therefore, it is reasonable to believe that plants may also have genes encoding enzymes that can specifically fix carbon from CO2.

<h3>How do plants convert CO2 into useful organic compounds?</h3>

Plants are able to convert CO2 into useful organic compounds through the process of photosynthesis. This process occurs in the chloroplasts, which are organelles found in the plant cells. In photosynthesis, the plant uses sunlight to convert CO2 and water into glucose and oxygen. The glucose can then be used by the plant for energy, while the oxygen is released into the atmosphere.

To learn more about photosynthesis, visit:

brainly.com/question/1388366

#SPJ4

3 0
1 year ago
Lucia has always been what some researchers call a cooperator; that is, someone who gives freely of her time, her money, and so
kondaur [170]

Answer:

The correct answer is - reciprocators.

Explanation:

Most people are normally reciprocators who only cooperates only when they see others doing cooperating. People generally cooperates only if other people do the same or help in in favor of the same thing.

Lucia behavior is the opposite of the reciprocators as Lucia cooperates with others irrespective behavior of the people.

Thus, the correct answer is - reciprocators.

3 0
3 years ago
Other questions:
  • A thick mass of tough roots called loess kept the fertile soil of the prairies in place and held on to moisture.
    11·1 answer
  • How do land and water temperatures affect air pressure?
    14·1 answer
  • Which part of the cell breaks down carbohydrates?
    7·1 answer
  • Which of the following is a form of active transport?
    8·1 answer
  • BIOLOGY question, pls i need assistance.
    14·2 answers
  • What are the possible consequences of adding an organism to a food chain
    8·1 answer
  • Which isotope has a relatively short half-life?
    7·1 answer
  • The translated amino acid sequence from the following mRNA would be mRNA: AUG-CAU-CUG-AAA-UAG
    9·1 answer
  • It takes 1000 years for deep waters that sink in the North Atlantic to emerge in the North Pacific. Why do waters sink in the No
    9·1 answer
  • Astronomy is the study of the ___ beyond earth.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!