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bezimeni [28]
3 years ago
6

During which phase of mitosis do the chromosomes coil up and condense

Biology
1 answer:
Inga [223]3 years ago
4 0
The phase of mitosis where the chromosomes coil up and condense is at prophase.
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You are an almond grower and want to determine whether almond size (measured as shelled almond weight) is a heritable trait. A s
inn [45]

Answer: 1. S = 0.77

              2. R = 0.14

Explanation:

1. <u><em>Selection</em></u> <u><em>differential</em></u> is the difference between the population mean and the average of the selected parents. Its symbol is S.

S = mean of selected parents - population mean

S = 6.48 - 5.71

S = 0.77

2. <em><u>Response</u></em> <em><u>to</u></em> <em><u>Selection</u></em> is how much gain you make when crossing over selected parents. Its symbol is R.

R = mean of offspring of selected parents - population mean

R = 5.85 - 5.71

R = 0.14

3. <em><u>Heritability</u></em> is, basically, a statistical variable that shows how much the variation in a trait is due to genetic factors. Its symbol is h².

To calculate it, use Breeder's Equation:

R = h²S

h^{2}=\frac{R}{S}

h^{2}=\frac{0.14}{0.77}

h² = 0.18

4. You would expect the production to be strongly influenced by environment, because heritability lies between 0 and 1. Low heritability means there is low level of resemblance between offspring and parents. As this program heritability is low, the resemblance is small, which means the characteristics are influenced mostly by the enviroment.

7 0
3 years ago
What would happen if the pouter pigeon and the fantail pigeon and the fantail pigeon were selectively bred?
lozanna [386]
<h2>Answer:</h2>

The offspring population will contains the desirable characteristics of both fantail pigeon and the fantail pigeon.

<h3>Explanation:</h3>
  • The selective breeding is the planned breeding between two organism of the population with desirable properties to result in the new traits from both parents in the single next generation offspring.
  • In this case, the offspring of the pouter pigeon and the fantail pigeon will contain the traits of pouter and it also has fantail.
  • The new generation will be selective breed an it is from the breeding of intra specie organism. If breeding is inter specie than the offspring is most probably infertile.
4 0
3 years ago
On what characteristic of an organism does natural selection exert pressure?
Pie

Answer: option D.

Phenotype

Explanation:

Theory of natural selection shows that different organism survive, adapt and reproduce in their environment due to their different phenotypic variation. The phenotypic variation exist among individual organisms and it is heritable which is transfer from one generation to another.

Phenotype are traits or physical characteristics or observable characteristics of organism e.g organisms appearance, behavior e.t.c.

8 0
3 years ago
Read 2 more answers
Please help fast please ASAP
Elena L [17]

Answer:

I can't see your questions

3 0
3 years ago
Why does the selection of available seeds favor some beaks more than others?
Reptile [31]

Answer:

because the beaks are different and since they prefer other avaliable seeds.

because the population changes over time its called natural selection, in darwins drawings there were extremely different from eachother.

because when he drew normal finches and went to galapagos islands he saw that there were also finches but they looked completely different and he analyzed their beaks. there are animals who change over natural selection

Explanation:

8 0
3 years ago
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