وراثت

The father of genetics is:

• 1 Darwin
• 2 Pasteur
• 3 Hooke
• 4 Mendel

Different forms of the same gene are called:

• 1 Alleles
• 2 Chromosomes
• 3 Genomes
• 4 Traits

In a cross between two heterozygous tall plants (Tt x Tt), the fraction of tall offspring is:

• 1 1/2
• 2 1/4
• 3 3/4
• 4 All

The genetic makeup of an organism is its:

• 1 Species
• 2 Genotype
• 3 Habitat
• 4 Phenotype

DNA stands for:

• 1 Dioxyribonucleic acid
• 2 Double nucleic acid
• 3 Deoxyribonucleic acid
• 4 Deoxyribose nitrogen acid

Humans have how many pairs of chromosomes?

• 1 48
• 2 22
• 3 23
• 4 46

A dominant allele is shown by a:

• 1 Capital letter
• 2 Number
• 3 Symbol only
• 4 Small letter

An organism with two identical alleles is:

• 1 Heterozygous
• 2 Hybrid
• 3 Mutant
• 4 Homozygous

In humans, the sex chromosomes of a male are:

• 1 YY
• 2 X only
• 3 XY
• 4 XX

Genes are made of:

• 1 Starch
• 2 Protein only
• 3 Fat
• 4 DNA