AP BIOLOGY

CELL DIVISION

CELL DIVISION AND CANCEROUS CELLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Chromosomes that are paired together because they are similar in size, shape, and the genes they carry are called:
A
equal chromosomes
B
homologous chromosomes
C
equivalent chromosomes
D
ambiguous chromosomes
Explanation: 

Detailed explanation-1: -A homologous chromosome pertains to one of a pair of chromosomes with the same gene sequence, loci, chromosomal length, and centromere location. A homologous pair consists of one paternal and one maternal chromosome. In humans, there are a total of 46 chromosomes in the nucleus of a somatic cell.

Detailed explanation-2: -Each pair consists of chromosomes of the same size and shape, and they also contain the same genes. The chromosomes in a pair are known as homologous chromosomes.

Detailed explanation-3: -Homologous chromosomes are made up of chromosome pairs of approximately the same length, centromere position, and staining pattern, for genes with the same corresponding loci. One homologous chromosome is inherited from the organism’s mother; the other is inherited from the organism’s father.

Detailed explanation-4: -The correct option is A. Synapsis. Synapsis is the pairing of two homologous chromosomes that occur during meiosis.

Detailed explanation-5: -Homologous chromosomes are chromosome pairs of approximately the same length, centromere position, and staining pattern, with genes for the same characteristics at corresponding loci. One homologous chromosome is inherited from the organism’s mother; the other from the organism’s father.

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