Exam 3: Genetics and Heredity

One ethical issue related to prenatal testing is how relatively late in the pregnancy many are carried out.

A(n)________ is a correlation between the genotype and environment that arises from the tendency for parents to establish a child-rearing environment in harmony with their own interests and preferences.

Jane has blue eyes.Her biological mother and father have brown eyes,which indicates that each of her parents contributed a _______ allele for eye color.

A ________ is a large segment of nucleotides within a chromosome that codes for the production of proteins and enzymes.

Explain the hereditary and environmental influences on intellectual abilities.Discuss the implications understanding these influences has on the future of developmental psychology.

The process of sorting sperm samples into cells with X and Y chromosomes and introducing a "lopsided" sample of sperm to the uterus during fertile periods is called

When a ________ cell division occurs,each daughter cell has a pair of chromosomes that is identical to the original pair.

________ is a recessive genetic disorder characterized by crescent-shaped red blood cells that are ineffective in carrying oxygen and survive for less time than normal red blood cells.

Even with proper dietary controls,children with PKU may display

The consequences of a recessive metabolic disorder such as PKU can be counteracted with a modification in dietary intake,making PKU a good example of

Carlos has inherited from his mother and father the same allelic form of the gene that codes for blood type.Carlos is ________ for blood type.

The concordance rate is the percentage of cousins who share a specific trait already identified in one.

________ is a dominant genetic disorder,which can also result from mutations,that usually is characterized by distinctive facial features,unusual postures and gaits,and most strikingly an uneven profile of cognitive and social strengths and weaknesses.

________ twins are siblings who share the same womb at the same time but originate from two different eggs fertilized by two different sperm cells.

________ is defined as the stable,early-appearing constellation of individual personality attributes believed to have a hereditary basis,including sociability,emotionality,and activity level.

Explain sickle cell trait.Be sure to discuss what can trigger sickeling and its adaptive feature.

The entire inventory of genes,including 3 billion chemical base pairs,that make up every human's biological inheritance is called

________ is a major field of study that investigates the structure and function of proteins.

Daisy suffers from what is believed to be an inheritable form of Alzheimer's disease.The responsible gene is likely located on chromosome 21.

Individuals with trisomy 21 who live beyond the age of forty tend to develop the abnormal brain cells and behavioral symptoms associated with