Genetics And Evolution Mock Tests

85 questions available

Genetics And Evolution Mock Test 1

Questions: 30

Genetics And Evolution Mock Test 2

Questions: 30

Genetics And Evolution Mock Test 3

Questions: 25

Sample Questions

NEET Biology

In Antirrhinum (snapdragon), crossing red-flowered (RR) plants with white-flowered (rr) plants produces pink-flowered (Rr) F₁ offspring. Selfing the F₁ generation gives a phenotypic ratio of:

A 3:1 (red:pink:white)

B 1:2:1 (red:pink:white)

C All pink

D All red

NEET Biology

The sex of a human child is determined by:

A The X chromosome of the egg

B The Y chromosome of the sperm

C The number of X chromosomes in the egg

D The ratio of X and Y chromosomes in the sperm

NEET Biology

Two genes are said to be linked when:

A They are located on the same chromosome and tend to be inherited together

B They are located on different chromosomes

C They show complete independent assortment

D They are located at the same locus on homologous chromosomes

NEET Biology

In snapdragon (Mirabilis jalapa), flower colour shows incomplete dominance. When a homozygous red-flowered plant (RR) is crossed with a homozygous white-flowered plant (rr), what is the phenotype of the F1 generation?

A Red flowers, because red is completely dominant over white

B White flowers, because white is dominant over red

C Pink flowers, an intermediate phenotype between red and white

D A mix of red and white flowers in a 1:1 ratio

NEET Biology

Huntington's disease is caused by:

A Autosomal dominant mutation in the HTT gene

B Autosomal recessive mutation in the CFTR gene

C X-linked recessive mutation in the FMR1 gene

D Mitochondrial DNA deletion

NEET Biology

Which of the following is the correct sequence of stages in prophase I of meiosis?

A Leptotene → Zygotene → Pachytene → Diplotene → Diakinesis

B Zygotene → Leptotene → Pachytene → Diplotene → Diakinesis

C Leptotene → Pachytene → Zygotene → Diplotene → Diakinesis

D Diakinesis → Diplotene → Pachytene → Zygotene → Leptotene

NEET Biology

DNA fingerprinting, developed by Alec Jeffreys, uses which type of DNA sequences as markers for identification?

A Exon sequences coding for proteins

B Veriably Number Tandem Repeats (VNTRs) — short repetitive DNA sequences

C Intron sequences that are non-repetitive

D Promoter regions of actively transcribed genes

NEET Biology

In the lac operon of E. coli, which of the following statements about the role of the inducer is correct?

A The inducer binds to the promoter to initiate transcription

B The inducer binds to the structural genes to activate them

C The inducer binds to the repressor protein, preventing it from binding to the operator

D The inducer binds to RNA polymerase to increase its activity

Comments

No comments yet. Be the first to share your thoughts!