If a dominant gene A is lost in a deletion, then the recessive gene a will express itself.This expression of a recessive trait is called

If a dominant gene A is lost in a deletion, then the recessive gene a will express itself.<br>This expression of a recessive trait is called

You know that H is dominant for height locus and H is recessive. Is the F2 progeny are a mixture of 3:1 dominant: recessive and you pick a dominant plant at random what will be the probability that the F3 will have a mixture of dominant and recessive traits as well?

A

All will show

B

1/16

C

1/4

D

2/3

In a cross between wild type pure breeding recessive and heterozygous dominant trait, if 4 progeny are found to be expressing the dominant phenotype, what will be the expected number of recessive?

A

1

B

2

C

3

D

4

If an H is for tall trait which is dominant and h is the recessive trait for short, which of the following cross will result in 1:1 tall: short progeny?

A

HH X hh

B

Hh X Hh

C

Hh X hh

D

hh X hh

Two trains Intercity express and Suvidha express start from Udaipur to Jaipur and Jaipur to Udaipur at the same time. Their speeds are 50 km/h and 100 km/h respectively. If a passenger travelling in Suvidha express reaches Ajmer in 2 hours and waits for his brother. Who is coming to Ajmer from Intercity express, if the distance between Udaipur to Jaipur is 350 km then find how many hours Suvidha Express passenger waits for his brother at Ajmer.

A

2 hours

B

1.5 hours

C

1 hours

D

2.5 hours

E

None of these

The appearance of a recessive phenotype due to deletion of dominant gene is called_______________

A

Hemi-dominance

B

Pseudo dominance

C

Imperfect dominance

D

Co-dominance

The distance between Delhi and Pune is 1000 km. Rajdhani express started at 6 am from Delhi to Pune and Shatabdi express started at 8 am from Pune to Delhi. Speed of Rajdhani express is half of that speed of Shatabdi express and Shatabdi express reached at 4 am on next day of its journey. When will the trains meet for the first time?

A

8:40 PM

B

10:20 PM

C

9:30 PM

D

7:00 PM

E

None of these

Jansatabdi Express crossed a lamp post in 65 sec and Duranto Express crossed the same post in 30 seconds. If the length of Duranto Express is two-third of that of the Jansatabdi Express, what is the ratio of the speeds of Jansatabdi and Duranto Express?

A

13 ∶ 9

B

12 ∶ 15

C

12 ∶ 13

D

9 ∶ 13

E

15 ∶ 12

Rajdhani express left from Delhi for Mumbai and Shatabdi express left Mumbai for Delhi. The trains are 845 km apart after they meet 5 hr ago. Rajdhani express arrived Mumbai 36 hr after their meeting and the Shatabdi express Delhi 49 hr after their meeting. What is the speed of Rajdhani express?

A

91 Km/h

B

100 Km/h

C

78 Km/h

D

81 Km/h

When both the parents carry the same recessive gene (e.g. blue eyes), they may statistically expect that the dominant (e.g. brown eyes) versus recessive (blue eyes) characteristic will be expressive in the offspring in the ratio of

A

1 : 1

B

1 : 3

C

3 : 1

D

None of the above

In an experiment with drosophila eye colour purple/red and wing shape normal/vestigial you observe that offspring mainly have either purple vestigial trait or red normal trait. What is the expected parental trait?

A

Purple long and Red long

B

Red Vestigial and purple long

C

Red vestigial and purple vestigial

D

Purple vestigial and red vestigial

If a dominant gene A is lost in a deletion, then the recessive gene a will express itself.
This expression of a recessive trait is called

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