67 points plus brainlest if done correctly.I will report you if you answer 3 or less of the questions, also must post all the answers at the same time.


16.
Which factors can affect a person’s height?

a person’s karyotype

genes only

both genes and environmental factors

a person’s blood type


17.
How does a geneticist use pedigrees?

to prove that sex-linked traits are caused by codominant alleles

to replicate identical strings of DNA

to trace the inheritance of traits in humans

to create genetic crosses


18.
Use the diagram to answer the question.


Which individuals do not exhibit the trait and are not carriers?


A, C, E, G, I, L, N, and O

B, D, F, H, J, K, M, P, and Q

A, C, F, J, N, and O

B, D, E, G, H, I, K, L, M, P, and Q


19.
Sex-linked genes are genes on _____.

the X and Y chromosomes

the X chromosome only

all 23 pairs of chromosomes

the Y chromosome only


20.
A karyotype can be used to diagnose the genetic disorder called _____.

hemophilia

sickle-cell disease

Down syndrome

cystic fibrosis