Cross Breeding And F1 Hybrids In Animals Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

How can new alleles be introduced?

A

New alleles can be introduced to plant and animal lines by crossing a cultivar or breed with an individual with a different, desired genotype.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What can individuals from different breeds produce?

A

Produce a new crossbreed population with improved characteristics.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Why are the two parent breeds maintained?

A

Can be maintained to produce more crossbred animals showing the improved characteristic.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

In plants, F1 hybrids…

A

Produced by the crossing of two different inbred lines, create a relatively uniform heterozygous crop.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

F1 hybrids often have…

A

Increased vigour and yield

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What can plants with increased vigour have?

A

Plants with increased vigour may have increased disease resistance or increased growth rate.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

In inbreeding…

A

Animals and plants, F1 hybrids are not usually bred together as the F2 produced shows too much variation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly