Genetics Review. Pedigrees Look at the pedigree’s to the right identify what type of inheritance each pedigree represents.

Genetics Review

PedigreesLook at the pedigree’s to the right identify what type of inheritance each pedigree represents.

Answers:

Pedigree A: autosomal recessive

Pedigree B: autosomal

dominant

PedigreesLook at the pedigree’s to the right identify what type of inheritance each pedigree represents.

Answers:

Pedigree C: Autosomal dominant

Pedigree D: Autosomal

recessive

Pedigree E: Sex-linked

PedigreesLook at the pedigree’s to the right identify what type of inheritance each pedigree represents.

Answers:

Pedigree F: Autosomal dominant

Pedigree G: Autosomal

recessive

Pedigree H: Autosomal

recessive

Mendel’s Law

• What Law states that that allele pairs separate independently of each other during gamete formation or meiosis. That is, different traits appear to be inherited separately.

Mendel’s Law

• What Law states that that allele pairs separate independently of each other during gamete formation or meiosis. That is, different traits appear to be inherited separately.

Law of Independent Assortment

Mendel’s Law

• Which law states that organisms inherit two copies of genes, one from each parent, and organisms donate only one copy of each gene in their gametes because the genes separate during gamete formation?

Mendel’s Law

• Which law states that organisms inherit two copies of genes, one from each parent, and organisms donate only one copy of each gene in their gametes because the genes separate during gamete formation?

Law of Segregation

Vocabulary

• The appearance of an organism is its

Vocabulary

• The appearance of an organism is its

• Phenotype

Vocabulary

A segment of DNA that controls a particular hereditary trait is called a

Vocabulary

A segment of DNA that controls a particular hereditary trait is called a

Gene

Vocabulary

• The genetic makeup of an organism is called it

Vocabulary

• The genetic makeup of an organism is called it

• Genotype

–AA or Aa or aa

Vocabulary Check

• What is the name of the type of inheritance when more males are affected then females for a trait?

Vocabulary Check

• What is the name of the type of inheritance when more males are affected then females for a trait?

• Sex-linked or X-linked trait

Punnett Square Practice

• In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. What are the possible combinations of genes in the offspring of two red-eyed heterozygous flies (Rr)?

Punnett Square Practice

• In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. What are the possible combinations of genes in the offspring of two red-eyed heterozygous flies (Rr)?

• RR Rr rr

Vocabulary Check

• Name in which two alleles for a trait are different is called?

Vocabulary Check

• Name in which two alleles for a trait are different is called?

• Heterozygous

Vocabulary Check

• What is the term when a third phenotype is present in the off-spring?

Vocabulary Check

• What is the term when a third phenotype is present in the off-spring?

• Incomplete dominance– Blending or mixing of two

traits

Punnett Square Practice

• An individual heterozygous for a trait and an individual homozygous recessive for the trait are crossed and produce offspring that are of how many different phenotypes?

Punnett Square Practice

• An individual heterozygous for a trait and an individual homozygous recessive for the trait are crossed and produce offspring that are of how many different phenotypes?

• Two

Punnett Square Practice

• A man and a woman do not show a trait but some of their offspring do. What kind of trait is it and what are the parent’s genotype?

• Use the letter B

Punnett Square Practice

• A man and a woman do not show a trait but some of their offspring do. What kind of trait is it and what are the parent’s genotype?

• Use the letter B

• It is a recessive trait• Parents must be Bb each

Vocabulary Check

• A homozygous individual would have what possible genotype?

Vocabulary Check

• A homozygous individual would have what possible genotype?

• Two dominant alleles or two recessive alleles

Which diagram to the right correctly illustrates the fusion of normal gametes that will most likely produce a human male?

Which diagram to the right correctly illustrates the fusion of normal gametes that will most likely produce a human male?Number 4

Vocabulary Check

• What is the term for manipulating an organisms DNA using technology?

Vocabulary Check

• What is the term for manipulating an organisms DNA using technology?

• Genetic engineering

Vocabulary Check

• What is the term for an identical copy with the exact same DNA?

Vocabulary Check

• What is the term for an identical copy with the exact same DNA?

• Clone

Vocabulary Check

• What is the term for artificially modified DNA?

Vocabulary Check

• What is the term for artificially modified DNA?

• Recombinant DNA