CB3 Genetics

Question 1

What are alleles?

Answer 1

Different forms of the same gene.

Question 2

How many alleles of a gene are in a haploid cell?

Answer 2

1

Question 3

How many alleles of a gene are in a diploid cell?

Answer 3

2

Question 4

What is meant by being homozygous for a gene?

Answer 4

The 2 alleles are the same.

Question 5

What is meant by being heterozygous for a gene?

Answer 5

The 2 alleles are different.

Question 6

What are the 2 human sex chromosomes?

Answer 6

X, Y

Question 7

What combination of sex chromosomes produces a human female?

Answer 7

XX

Question 8

What combination of sex chromosomes produces a human male?

Answer 8

XY

Question 9

What is meant by a genetic carrier?

Answer 9

A person with a heterozygous genotype for a recessive genetic disorder.

Question 10

What is the Human Genome Project?

Answer 10

A global project that successfully produced a map of the entire human genome.

Question 11

What are the 2 main advantages of mapping a person’s genome?

Answer 11

Indicate the risk of developing genetic disorders, identify the best medicines to use to treat illness