Genes and alleles

Question 1

What is an organism’s genotype?

Answer 1

an organism’s genetic composition.

Question 2

What is an organism’s phenotype?

Answer 2

an organism’s characteristics, often visible,

Question 3

WHat impacts an organism’s phenotype

Answer 3

its genotype and the impact of its environment.

Question 4

What are genes?

Answer 4

Genes are a sequence of DNA that code for a polypeptide

Question 5

What are alleles

Answer 5

different forms of a gene

Question 6

Diploid cells characteristics

Answer 6

chromosomes occur in pairs called homologous

chromosomes

Question 7

Diploid cells can be homozygous meaning ..

Answer 7

the alleles at a specific locus can be homozygous if they are both the same type of allele

Question 8

Diploid cells can be Heterozygous meaning ..

Answer 8

the alleles at a specific locus can be heterozygous if both the alleles are different

Question 9

Define a dominant allele

Answer 9

t is expressed in the phenotype of an

heterozygous individual.

Question 10

Define a recessive allele

Answer 10

it is not expressed in the phenotype of a heterozygous individual.

Question 11

Define a codominant allele

Answer 11

it is expressed, along with the other

allele, in the phenotype of a heterozygous individual.