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kozerog [31]
3 years ago
8

Which of the following causes a mutation in a gene

Biology
1 answer:
Natalka [10]3 years ago
8 0

Answer:

Mutations arise spontaneously at low frequency owing to the chemical instability of purine and pyrimidine bases and to errors during DNA replication. Natural exposure of an organism to certain environmental factors, such as ultraviolet light and chemical carcinogens (e.g., aflatoxin B1), also can cause mutations.

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Assume a population of purple and white flower pea plants (2000 total plants) is in Hardy-Weinberg equilibrium. The frequency of
lys-0071 [83]

Answer:

a) 0.48

b)

p= 0.4\\q=0.6

c) 720

Explanation:

Given ,

Frequency of white flower plant (p^2) is 0.16

Thus, frequency of dominant white allele (p) is equal to \sqrt{0.16} \\= 0.4

As we that, as per  Hardy-Weinberg equilibrium equation

p+q=1

Substituting the value of p in above equation, we get

0.4+q=1\\q=1-0.4\\q=0.6

a) As per Hardy-Weinberg equilibrium equation

p^2+q^2+2pq=1\\

Substituting the given and calculated values in above equation, we get -

0.4^2+0.6^2+2pq=1\\0.16+0.36+2pq=1\\2pq=1-0.16-0.36\\2pq=0.48

b) The frequency (decimal form) of the dominant allele

p= 0.4\\q=0.6

c) number of homozygous purple flower plants

= frequency of purple flower plants (q^2) * Number of flowers

= q^2 * 2000\\= (0.6^2)*2000\\= 0.36 * 2000\\= 720

8 0
3 years ago
Filomena is a carrier for albinism, a recessive genetic disorder. Javier is also a carrier for this trait. They fall in love and
labwork [276]

Answer:

10/10

Explanation:

Its because both parents carry the same gene

6 0
3 years ago
The condition in which there are three copies of the a chromosomes type instead of the normal two is called
andrew11 [14]

Answer:

Trisomy

Explanation:

A trisomy is a type of polysomy (presence of three or more copies of the chromosome rather than the expected two copies) in which there are three copies of a particular chromosome, instead of the normal two. A trisomy is a also a genetic disorder and a type of aneuploidy (an abnormal number of chromosomes either an increase or a decrease). Examples include trisomy 21 (Down syndrome), trisomy 18 (Edward syndrome), trisomy 13 (Patau syndrome)

7 0
3 years ago
Read 2 more answers
Which of the following food chains is in the correct order?
sasho [114]
C is the correct answer because 

1. producer creates its own food
2. consumer eats producer so it gets energy
3. consumer or producer die giving way for decomposers 
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5 0
3 years ago
Is Reproduction necessary for the survival of an individual
Step2247 [10]
It shouldn't because you cant keep a sex life for so long until you die

6 0
3 years ago
Read 2 more answers
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