Test 3 Flashcardizz

Front

What are the base pairing rules in DNA and RNA?

Back

In DNA, Adenine pairs with Thymine and Cytosine pairs with Guanine. In RNA, Adenine pairs with Uracil and Cytosine pairs with Guanine.

Front

What is the process that ensures genetic diversity during meiosis?

Back

Crossing over is the process that ensures genetic diversity during meiosis by exchanging genetic material between homologous chromosomes.

Front

What forms the 'sides' of the DNA ladder?

Back

The sides of the DNA ladder are formed by sugar-phosphate backbones.

Front

What is the function of the corpus luteum in the female reproductive system?

Back

The corpus luteum secretes progesterone to maintain the uterine lining for potential implantation of a fertilized egg.

Front

What is a phenotype?

Back

A phenotype is the expressed trait of an organism, which can be influenced by both genetic makeup and environmental factors.

Front

What is the role of nitrogenous bases in DNA?

Back

Nitrogenous bases pair together to form the rungs of the DNA ladder, contributing to the genetic code.

Front

What is meiosis?

Back

Meiosis is a type of cell division that reduces the chromosome number by half, resulting in the production of gametes (sperm and eggs).

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits.

Front

What is the significance of crossing over in genetics?

Back

Crossing over increases genetic variation by allowing the exchange of genetic material between homologous chromosomes during meiosis.

Front

What is the structure of DNA?

Back

DNA is a double helix composed of two strands of nucleotides, with a sugar-phosphate backbone and nitrogenous bases.