An inverted bell-shaped curve represents the distribution of phenotypes of a
multifactorial trait in a population.
Indicate whether the statement is true or false
(
Question 2) Conjoined twins result from incomplete twinning, which occurs during the first month of
gestation.
8
Indicate whether the statement is true or false
(
Question 3) A trait determined by more than one gene is polygenic.
Indicate whether the statement is true or false
(
Question 4) A multifactorial trait is determined by many environmental factors, but not necessarily
genetic influences.
Indicate whether the statement is true or false
(
Question 5) Aging-related changes include shrinking of the prostate in men and enlargement of the
breasts in women.
Indicate whether the statement is true or false
(
Question 6) The adolescent period begins at the end of the first year and completes at puberty.
Indicate whether the statement is true or false
(
Question 7) Some factors that help to stimulate the newborn's first breath are increasing CO2,
decreasing pH, decreasing O2, decreasing body temperature, and mechanical stimulation.
Indicate whether the statement is true or false
(
Question 8) The muscle disorder myotonic dystrophy can be caused by different genes, on different
chromosomes. This means that the condition is genetically heterogeneic.
Indicate whether the statement is true or false
(
Question 9) After birth, the ductus arteriosus constricts and becomes the ligamentum arteriosum.
Indicate whether the statement is true or false
(
Question 10) Variable expressivity and pleiotropy can account for a disease that produces different
intensities of symptoms or different symptoms among individuals.
Indicate whether the statement is true or false
Quick Reply
