Albinism is an autosomal (not sex-linked) recessive trait. A man and woman are both of normal pigmentation and have one child out of three who is albino (without melanin pigmentation). What are the genotypes of the albino's parents?
A) One parent must be homozygous for the recessive allele; the other parent can be homozygous dominant, homozygous recessive, or heterozygous.
B) One parent must be heterozygous; the other parent can be homozygous dominant, homozygous recessive, or heterozygous.
C) Both parents must be heterozygous.
D) One parent must be homozygous dominant; the other parent must be heterozygous.
C
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Which of the following are strategies employed in habitat conservation?
_____ identifying representative habitats _____ identifying charismatic species _____ identifying countries rich in species _____ identifying areas rich in endemic species _____ establishing a captive breeding program
Why are viruses not considered to be living organisms?
What will be an ideal response?
The new version of the H1N1 virus had genes
from ___ flu viruses.
a. human b. bird c. swine d. all of these e. none of these
The two main goals of the Human Genome Project are to sequence all of the DNA base pairs of the human chromosomes and to
A.) compare the human genome with those of other species. B.) identify all of the genes within the genome. C.) classify all of the alleles that cause genetic disorders. D.) find the closest living relative to humans.