PATHOLOGY

PATHOLOGY MCQ

GENETICS AND DISEASE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are chromosomes that carry the same sets of genes?
A
Twin chromosomes
B
Homologous chromosomes
C
Ordinary chromosomes
D
Asexual chromosomes
Explanation: 

Detailed explanation-1: -The chromosomes in a homologous pair each have the same genes in the same order, but there may be variation between them, resulting in different alleles. Some of the variants in these alleles might have functional implications while others will not.

Detailed explanation-2: -What are Homologous Chromosomes? Homologous Chromosomes are made of chromosomal pairs of the same length and centromere positions for the genes corresponding to the same loci. Typically one of the chromosomes is inherited from the father and the other from the mother.

Detailed explanation-3: -Homologous chromosomes are two pieces of DNA within a diploid organism which carry the same genes, one from each parental source. In simpler terms, both of your parents provide a complete genome. Each parent provides the same 23 chromosomes, which encode the same genes.

Detailed explanation-4: -A cell that contains both sets of homologous chromosomes is said to be diploid, which means “two sets”. The number of chromosomes is a diploid cell is represented by the symbol 2N.

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