Genetic Inheritance

Question 1

How do genes relate to DNA and chromosomes?

Answer 1

Chromosomes carry DNA in cells. DNA is responsible for building and maintaining your human structure. Genes are segments of your DNA, which give you physical characteristics that make you unique.

Question 2

What are alleles?

Answer 2

When the copies of a gene differ from each other, they are known as alleles.

Question 3

What are genes?

Answer 3

Genes carry the information that determines your traits

Question 4

Compare and contrast alleles and genes:

Answer 4

Alleles are the different versions of genes.

Question 5

What is phenotype?

Question 6

What is genotype?

Question 7

Compare and contrast (and relate) phenotype and genotype:

Question 8

Define homozygous:

Question 9

Define heterozygous:

Question 10

Define dominant:

Question 11

Define recessive:

Question 12

If H is hairy and h is smooth-skinned, which allele is dominant and which recessive?

Question 13

If H is hairy and h is smooth-skinned, what phenotype would an individual with Hh be?

Question 14

H is hairy and h is smooth-skinned. If two heterozygous individuals mate, what percent of their babies will also be heterozygous?

Question 15

How do X and Y chromosomes determine human sex?

Question 16

What is incomplete dominance inheritance?

Question 17

What is codominance dominance inheritance?

Question 18

What is sex-linked inheritance?

Question 19

What is multiple alleles inheritance?

Question 20

Explain how ABO blood type is determined.

Question 21

What type of cross (phenotypic or genotypic) produces a 3:1 ratio?

Question 22

What type of cross (phenotypic or genotypic) produces a 1:2:1 ratio?

Question 23

Look at the pedigree given (add pedigree). What is the mode of inheritance? What genotype do carriers have?

Question 24

If two individuals— both carriers for an autosomal recessive disorder— have a child, what is the probability that said child will have the disease?

Question 25

Understand how sex-linked traits are passed on differently in males and females.

Question 26

If a man with hemophilia (XhY) has babies with a woman who carries hemophilia (XHXh), what percent of kids will have it?

Question 27

If a man with hemophilia (XhY) has babies with a woman who carries hemophilia (XHXh), what percent of boys will have it?

Question 28

If a man with hemophilia (XhY) has babies with a woman who carries hemophilia (XHXh), what percent of girls will have it?

Question 29

Define genome:

Question 30

Who was Gregor Mendel?

Question 31

Use punnet squares to do various monohybrid cross various and make predictions about the offspring. For instance, what percent of babies will be phenotypically dominant if two heterozygous individuals mate?

Question 32

What type of genotype is Tt?

Question 33

What phenotype would Tt have?

Question 34

What does true breeding mean?

Question 35

Give an example of true breeding:

Question 36

What does hybrid mean?

Question 37

Compare and contrast the terms hybrid and heterozygous.