Front

What is non-disjunction?

Back

Non-disjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division, leading to gametes with an abnormal number of chromosomes.

Front

What are the nitrogen bases that form the dark bands on chromosomes?

Back

The dark bands on chromosomes are formed by the nitrogen bases Adenine (A) and Thymine (T).

Front

What is Turner's Syndrome?

Back

Turner's Syndrome is a chromosomal disorder that affects females, characterized by the absence of one X chromosome (45,X).

Front

What is a deletion mutation?

Back

A deletion mutation is a type of chromosomal mutation where a segment of the chromosome is lost, resulting in a shorter chromosome.

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What is trisomy?

Back

Trisomy is a genetic disorder where an individual has three copies of a chromosome instead of the usual two, such as in Down Syndrome (Trisomy 21) and Edward's Syndrome (Trisomy 18).

Front

What is crossing over?

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Crossing over is a process during meiosis where homologous chromosomes exchange segments of genetic material, increasing genetic diversity.

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What is a karyotype?

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A karyotype is a visual representation of an individual's chromosomes, arranged in pairs and organized by size, shape, and number.

Front

What is Klienfelter's Syndrome?

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Klienfelter's Syndrome is a chromosomal disorder in males characterized by the presence of an extra X chromosome (47,XXY), leading to various physical and developmental issues.

Front

What is an inversion mutation?

Back

An inversion mutation occurs when a segment of a chromosome is reversed end to end, which can affect gene expression.

Front

What is translocation in genetics?

Back

Translocation is a chromosomal mutation where a segment of one chromosome breaks off and attaches to another chromosome, potentially leading to genetic disorders.