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Maslowich
3 years ago
7

In the African savanna,more wildebeests are born than the environment can support. Which is most likely to happen over a period

of years as a result
Biology
1 answer:
Thepotemich [5.8K]3 years ago
8 0
The wildebeests will overpopulate the area and the ecosystem will be thrown off
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If A/A ⋅ B/B is crossed with a/a ⋅ b/b and the F1 is testcrossed, what percentage of the testcross progeny will be a/a ⋅ b/b if
Alex787 [66]

Answer:

a) 25%; b) 50%; c) 45%; d) 38%

Explanation:

<h3 /><h3>a) Unlinked genes</h3>

A/A B/B X a/a b/b

F1: A/a B/b

Testcross A/a B/b X a/a b/b

The homozygous recessive individual only produces <em>ab</em><em> </em>gametes.

The F1 produces four types of gametes (each of them with a frequency of 1/4):  <em>AB</em>, <em>Ab</em>, <em>aB </em>and <em>ab</em>.

25% of the progeny will be a/a b/b.

<h3>b) Completely linked genes</h3>

AB/AB X ab/ab

F1: AB/ab

Testcross AB/ab X ab/ab

The F1 produces only two types of gametes, the parentals (each of them with a frequency of 1/2):  <em>AB</em> and <em>ab</em>.

50% of the progeny will be ab/ab.

<h3>c) 10 m.u. apart</h3>

AB/AB X ab/ab

F1: AB/ab

Testcross AB/ab X ab/ab

The F1 produces four types of gametes, the parentals <em>AB</em> and <em>ab </em>and the recombinants <em>Ab</em> and <em>aB</em>.

Since the genes are 10mu apart, 10% of the produced gametes will be recombinant and 90% will be parentals. Since there are two types of parental gametes, each of them has a frequency of 45%.

45% of the progeny will be ab/ab.

<h3>d) 24 m.u. apart</h3>

This is very similar to c).

Since the genes are 24mu apart, 24% of the produced gametes will be recombinant and 76% will be parentals. Since there are two types of parental gametes, each of them has a frequency of 38%.

38% of the progeny will be ab/ab.

5 0
3 years ago
The simple interest on $200 at 12% for 2 years is
Ganezh [65]

Answer:

d. $48

Explanation:

1 year = 12% = 0.12

2 years = 12% × 2

2 years = 24% = 0.24

24% of $200 = 0.24 × 200

24% of $200 = $48

Therefore the interest on $200 for 2 years is $48

:)

5 0
1 year ago
The table to below lists some of the effects that the introduction of the takhi has had on the species genetic diversity
yawa3891 [41]

Answer:

wheres the table?

4 0
3 years ago
An astronomer studies an image taken by a satellite in space and sees an area of gas, dust, and many stars distributed along spi
expeople1 [14]
The answer is a galaxy
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Carlos avoids _____on the ingredient list of packaged foods because he has celiac disease.
mamaluj [8]

Answer:

wheat, rye, and barley

Explanation:

  • Celiac disease is a type of an immune disorder in which a person is unable to eat food that contains gluten because it can lead to the destruction of their small intestine.
  • Gluten is a type of protein that is found in several ingredients such as wheat, rye, and barley.
  • Consumption of gluten can lead to the development of inflammation in the small intestine which after a certain time can lead to its destruction.
  • The various symptoms associated with the disease include bloating, diarrhea, anemia, etc.
  • Since Carlos has celiac disease he has to avoid wheat, rye, and barley.
5 0
3 years ago
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