Animal Science 1 - 8.02

Compared to heritability estimates for yield grade, retail yield, and rate of gain in beef cattle, the heritability estimates for traits related to reproduction are:

• about the same

• lower

• much higher.

• slightly higher.

The first stage of mitosis is:

• anaphase

• telophase

• prophase

• metaphase

The mitochondrion of the cell converts energy stored as glucose into:

• cell membrane.

• deoxyribonucleic acid.

• adenosine triphosphate.

• cytoplasm.

Compared to heritability estimates for muscle, length, and fat traits in swine, the heritability estimates for traits related to reproduction are:

• lower.

• about the same.

• much higher.

• slightly higher.

After cell division by meiosis, the number of chromosomes each egg or sperm has is:

• 1/4 the original.

• 1/2 the original

• ten times the original

• twice the original

The production of ovum is called:

• mitosis

• oogenesis

• zygote

• spermatogenesis

In general, heritability estimates for beef cattle compared to swine are:

• about the same

• higher

• much lower

• slightly lower

The site of protein synthesis inside the cell is the:

• ribosome

• cell membrane

• golgi body

• centrosome

Located on chromosomes, the complex molecules that control the characteristics that are inherited from parents are called:

• sperm

• punneet squares

• genes

• eggs

The body of an animal is made up of millions of tiny structural units called:

• cells

• hairs

• hormones

• muscles