BASIC GENETICS

Question 1

basic unit of genetic information

Answer 1

Genes

Question 2

collection of genetic information

Answer 2

Genome

Question 3

storage units of genes

Answer 3

Chromosomes

Question 4

the genetic material

Answer 4

DNA

Question 5

location of a gen in a chromosome

Answer 5

Locus

Question 6

one variant form of a gene at a particular locus

Answer 6

Allele

Question 7

chromosome haploid in human

Answer 7

23 pairs

Question 8

the first 22 pairs of chromosomes

Answer 8

Autosomes

Question 9

Genetic constitution of an organism

Answer 9

Genotype

Question 10

expression of genotype

Answer 10

Phenotype

Question 11

expressed even if paired with recessive allele

Answer 11

Dominant allele

Question 12

only visible when expressed with another recessive allele

Answer 12

Recessive allele

Question 13

Two member of a gene pair segregate from each other into the gametes, so half the gametes carry one member of the pair and the other half carry the other member of the pair

Answer 13

Mendel’s 1st Law: Law of Segregation

Question 14

Different gene pairs assort independently in gamete formation

Answer 14

Mendel’s 2nd Law: Law of Independent Assortment

Question 15

disease appears in male and female of unaffected parents

Answer 15

Autosomal recessive

Question 16

Affected males and females appear in each generation of the pedigree

Answer 16

Autosomal dominant

Question 17

Many more males than females show the disorder. The daughters are carriers

Answer 17

X-linked recessive

Question 18

Affected males pass the disorder to all daughters but none to their son

Answer 18

X-linked dominant

Question 19

both traits are manifested

Answer 19

Incomplete Dominance

Question 20

this inheritance applies to genes in mitochondrial DNA

Answer 20

Mitochondrial inheritance