2024-8th 1st Semester Exam

Front

Offspring from parents with different forms of the same trait are called _____________.

Back

hybrids

Front

Which plant is homozygous for recessive traits?

Back

rr

Front

An organism that is heterozygous for a trait mates with another organism that is also heterozygous for that trait. What would be the percentage of offspring that would be homozygous recessive?

Back

25 percent

Front

The order of the nitrogen bases in mRNA determines the order of the ______________ in a protein.

Back

amino acids

Front

A mutation is a change in the ______________ sequence (order).

Back

nucleotide

Front

What is the definition of a hybrid organism?

Back

An organism that has two different alleles for a trait.

Front

Define homozygous.

Back

An organism that has two identical alleles for a trait.

Front

Define heterozygous.

Back

An organism that has two different alleles for a trait.

Front

What is the role of mRNA in protein synthesis?

Back

mRNA carries the genetic information from DNA to the ribosome, where proteins are synthesized.

Front

What are nitrogen bases?

Back

The building blocks of DNA and RNA, which include adenine, thymine, cytosine, guanine (in DNA) and uracil (in RNA).