AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

RECOMBINANT DNA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Through natural mechanisms, recombination occurs during crossing over between
A
members of the same species.
B
members of different species.
C
homologous chromosomes
D
base pairs on any adjacent chromosomes
Explanation: 

Detailed explanation-1: -In general, recombination can occur any time homologous chromosomes pair up, whether they are freely floating in tandem or lined up on the metaphase plate during meiosis.

Detailed explanation-2: -General recombination (also called homologous recombination) allows large sections of the DNA double helix to move from one chromosome to another, and it is responsible for the crossing-over of chromosomes that occurs during meiosis in fungi, animals, and plants.

Detailed explanation-3: -During prophase I, homologous chromosomes pair with each other and exchange genetic material in a process called chromosomal crossover.

Detailed explanation-4: -General recombination occurs through crossing over by pairing between the complementary single strands of DNA duplex (a). Two homologous regions of DNA double helix undergo an exchange reaction.

There is 1 question to complete.