TLS Online TPP Program

#Question id: 12585


Agricultural lands frequently require nutritional supplementation because

#Unit 10. Ecological Principles
  1. Nitrogen-fixing bacteria and detrivores do not cycle nutrients as effectively as they do on wild lands. 
  2. The nutrients that enter the plants are not returned to the soil on lands where they are harvested. 
  3. The prairies that comprise good agricultural land tend to be nutrient-poor.
  4. Grains raised for feed must be fortified, and thus require additional nutrients.
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TLS Online TPP Program

#Question id: 4864

#Unit 8. Inheritance Biology

Following is a number of different gamete produced by AaBbCc

ABC- 366, abc- 367,   aBc- 109     AbC-105   

aBC-3      Abc -4      ABc- 25     abC-21

What are distance between A and B

TLS Online TPP Program

#Question id: 4865

#Unit 8. Inheritance Biology

Neurospora strain with genotype Ab was cross to another strain with genotype aB. Following different ascus and their appropriate number given in table.

Ascus type

1+2

3+4

5+6

7+8

Number

1

Ab

Ab

aB

aB

150

2

AB

AB

ab

ab

10

3

Ab

AB

ab

aB

31

4

Ab

AB

aB

ab

21

5

aB

aB

Ab

Ab

88

Which is distance between gene A and Gene B?

TLS Online TPP Program

#Question id: 4866

#Unit 8. Inheritance Biology

In a certain diploid plant, the three loci A, B, and C are linked as follows: Assuming 100%   interference, if the plant with genotype ABC/abc is test cross, what proportion of the progeny will be of the genotype a b c/a b c?

TLS Online TPP Program

#Question id: 4867

#Unit 8. Inheritance Biology

A three point test cross was carried out in Drosophila melanogaster involving three adjacent incomplete link genes A, B and C. arranged in the same order. The distance between A to B is 5 map units (mu) and that between B to C is 10 map. If pure line Drosophila AAbbCC crosses with aaBBcc to produce F1 offspring were allowed to cross with aabbcc result in following offspring genotype?

Genotype

Percent

Aabbcc

A

aabbCc

B

AaBbCc

C

What is a A, B, C respectively?

TLS Online TPP Program

#Question id: 4868

#Unit 8. Inheritance Biology

 A mouse cross C/c . D/d X c/c . d/d is made, and in the progeny there are

45% C/c . d/d, 45% c/c . D/d,

5% c/c . d/d, 5% C/c . D/d

What are distance between C and D gene?

TLS Online TPP Program

#Question id: 4869

#Unit 8. Inheritance Biology

In the plant Arabidopsis, the loci for pod length (L, long; l, short) and fruit hairs (H, hairy; h, smooth) are linked 16 map units apart on the same chromosome. The following crosses were made:

(i) L H/L H X l h/l h = F1

(ii) L h/L h X l H/l H = F1

If the F1’s from (i) and (ii) are crossed, what proportion of the progeny are expected to l h/l h?