Science Quiz Topic 4 Lesson 1

Question 1

Difference between dominant and recessive alleles

Answer 1

dominant allele is always expressed or seen. A recessive allele is only expressed when in a homozygous pair(bb).

Question 2

How recessive and dominant alleles are represented

Answer 2

Dominant alleles are represented by capital letters and recessive alleles are represented by lowercase letters.

Question 3

Describe Mendel’s first experiment

Answer 3

Transferred the male flower part to the female flower part to get a desired trait. He wanted to see what would happen with pea plants when he crossed different traits like short and tall, yellow seeds and green seeds. Etc.

Question 4

What is it called when an organism has the same alleles

Answer 4

Homozygous

Question 5

The difference between a genotype and phenotype

Answer 5

phenotype is the physical appearance of an organism, while the Genotype is the genetic composition of an organism.

Question 6

What condition is needed to occur for an offspring to express a recessive trait?

Answer 6

both (recessive) alleles must be present to express the recessive trait.