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Tju [1.3M]
3 years ago
12

With repeated presentations of a bright red toy, 2-month-old Anita began to respond with less visual attention to the toy. Her d

ecreasing responsiveness best illustrates
Biology
1 answer:
ivann1987 [24]3 years ago
6 0

Answer:

The development of sharper visual acuity.

Explanation:

At one week after birth, they can see red, orange, yellow and green. However, babies see red as the first primary color.

Many advances in vision development take place in months two and three. Infants develop sharper visual acuity during this period, and their eyes are beginning to move better as a team. A child should be following moving objects at this stage and starting to reach for things he sees.

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During the summer months, people who live near the North Pole will have than people who live near the equator longer days longer
Colt1911 [192]

Answer:

reas on the Equator have a constant 12 hours of day light all year round. As latitude increases to 80° (polar circles - north or south) day length can be seen to increase to 24 hours or decrease to zero (depending on time of year). Land of the Midnight Sun and Polar Winters where the sun never rises.

Explanation:

hope this helps

4 0
3 years ago
A genetically heterogeneous population of rice has a mean in the number of days to maturation of 30. Selection for decreased per
chubhunter [2.5K]

Answer:

h² = 0.6

Explanation:

Before answering the question, we need to know a few concepts.

<u>Artificial selection</u> is the selecting practice of a specific group of organisms in a population -that carry the traits of interest- to be the parents of the following generations.

Parental individuals carrying phenotypic values of interest are selected from the whole population. These parents interbreed, and a new generation is produced.

<u>The selection differential, SD,</u> is the difference between the mean value of the trait in the population (X₀) and the mean value of the parents, (Xs). So,  

SD = X₀ - Xs

<u>Heritability in the strict sense, h²</u>, is the genetic component measure to which additive genetic variance contributes. The heritability might be used to determine how the population will respond to the selection done, R.  

h² = R/SD

The <u>response to selection (R) </u>refers to the metric value gained from the cross between the selected parents. R can be calculated by multiplying the heritability h², with the selection differential, SD.  

R = h²SD  

R also equals the difference between the new generation phenotypic value (X₁) and the original population phenotypic value (X₀),  

R = X₀ - X₁

-------------------------------------------------------------------------------------------------------------

Now that we know these concepts and how to calculate them, we can solve the proposed problem.

Available data:  

  • You are selecting rice´s decreased period of maturation.
  • The population of rice has a mean maturation time of 30 days → X₀
  • Parental selected average period to maturation is 25 days → Xs
  • F1 plants mature on average in 27 days → X₁
  • N arrow sense Heritability → h²

According to what we sow previously, we need to find out the value of h².

We know that h² = R/SD, so we need to get R and SD first.  

R = X₁ - X₀

R = 27 - 30

R = -3

SD = Xs -  X₀  

SD = 25 - 30

SD = -5

Knowing this, we can calculate h²

h² = R/SD

h² = -3/-5  

h² = 0.6

 

7 0
3 years ago
HELP!! ILL GIVE U BRAINLIEST
patriot [66]

Answer:

A recessive autosomal allele is a heterozygous pair.

Explanation:

they have one mutated gene (recessive gene) and one normal gene (dominant gene) for the condition.

I would say you're best choice is E or F, but I can't remember right now. Its been a bit since my gene mutation module. Sorry I can't help more!

8 0
3 years ago
Wendy measures the temperature outside of her school every ten minutes. She records her data in the table below. Time Temperatur
AlladinOne [14]

Answer:

b

Explanation:

the rain is likely in the in the next few minutes

3 0
3 years ago
Which of the descriptions below does not explain the effects of air pollution on the respiratory system?
NeTakaya
I believe that the best answer among the choices provided by the question is <span>It could increase carbon dioxide uptake in alveolar sacs.</span>
Hope my answer would be a great help for you.    If you have more questions feel free to ask here at Brainly.
7 0
3 years ago
Read 2 more answers
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