Exam 7: Multifactorial Traits

A gene discovery technique that looks at regions of the genome where individuals have the same alleles much more often than expected by chance,because their ancestors were blood relatives,is called

Average height of college students increased throughout the 20th century because

Mendel's laws

Genes that help to control body weight encode the proteins

In a polygenic trait

Studies that implicate the environment in influencing body weight consider

Heritability refers to

Polygenic traits are

The empiric risk that the monozygotic twin of a person with cleft lip also has cleft lift is _____ times the risk to a member of the general population who has no relatives with cleft lip.

Multifactorial traits include

If a trait has a large inherited component,then concordance among monozygotic twins will be

"Total ridge count" is

Heritability of a trait can change because

A brother and sister share _____ percent of their genes.

Rasheed suffers terrible migraine headaches.They are likely caused by

DNA sequences that contribute to polygenic traits are called

Traits that have both inherited and environmental causes are termed

For a multifactorial,polygenic trait,the characteristic shape of the mathematical plot of frequency for each phenotype class is

Two brothers share _____ percent of their genes.

Concordance refers to