who is the “father of genetics”?

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Who is the “Father of Genetics”?

Gregor Mendel

When 2 alleles DON’T BLENDbut BOTH SHOW TOGETHERlike in A B blood type, it is called_______________

Codominance incomplete dominance

codominance

Transmission of characteristics from parents to offspring is called ___________________.

_____________ is the study of how characteristics are passed on from one generation to the next.

heredity

Genetics

__________________ = An allelethat IS MASKED BY the

presence of another allele

RECESSIVE

The appearance of an organism is

its _____________phenotype

_______________

are different gene

choices for a trait.

ALLELES

__________________ = An allele that MASKS the presence of another allele

Red and white flowers producingpink offspring is an example of

_______________________ Codominance incomplete dominance

DOMINANT

Incomplete dominance

A dominant gene is represented by a ____________ letter.(usually the first letter of the trait)

capital

When a heterozygous individual showsa blending of 2 alleles instead of one being dominant over the other it is called___________ ____________.Incomplete dominance

A recessive gene is represented by a _________________ letter.lower case

What phenotypic ratio would youexpect to see in offspring from amonohybrid cross of 2 heterozygous parents?

3:1 Dominant:recessive

B b

B

b

In guinea pigs black fur (B) is dominant over brown fur (b). The Punnett square for a cross between a HETEROZYGOUS black guinea pig and a PURE brown guinea pig would look like

This is the Correct setup

Heterozygous = BbPure brown = bb

B B

b

b

B b

b

b

B b

B

B

Another name for pure is _________________homozygous

R = red flowers r = white flowers

Red

pink

An Rr organism would have ____________ flowers if this trait was COMPLETELY DOMINANT.

An Rr organism would have ____________ flowers if this trait was INCOMPLETELY DOMINANT.

An Rr organism would have ______________ flowers if this trait was CODOMINANT.

BOTH red & white

T = Tall

t = short

The genotype of the offspring from the

cross at the right is _________.

Their phenotype is _________.

Tttall

The parents in this cross are _____________ Homozygous Heterozygous

Homozygous

If W is dominant for long wings and w is recessive for short wings, what percentage of these offspring will have short wings? _______%

0% only ww makes it short

If you cross a homozygous RED flowered four o’clock plant with a homozygous WHITE flowered plant, ALL of the offspring produced have PINK flowers.

This type of inheritance in which the heterozygote (Rr) shows a blending of traits is called __________.

A. Dominant/recessive inheritance B. Co-dominance

C. Incomplete dominance

Incomplete dominance

L = Blue legs l = yellow legs

Blue

green

An Rr organism would have ____________ legs if this trait was COMPLETELY DOMINANT.

An Rr organism would have ____________ legs if this trait was INCOMPLETELY DOMINANT.

An Rr organism would have ______________ legs if this trait was CODOMINANT.

BOTH Blue & yellow

In the cross at the

right __________

is dominant for flower color.

red

Tt Mm Rr

Which of the following genotypesis from a heterozygous organism?

Tt SS bb Mm Rr

The parents in this cross are _____________ Homozygous Heterozygous

Heterozygous

If G is dominant for green pods and g is recessive for yellow pods, what percentage of the offspring will have green pods? _______% 75

GG Gg

Gg gg

G gG

g

B b

B

b

The genotype of the offspring in the blue box is _______

bb

The offspring in the blue box is homozygous heterozygous

homozygous

IA iIA IAIA IAi

IB IAIB IBi

F A & B are codominant

The alleles for blood type show 2 kinds of inheritance..

The following statements are TRUE or FALSE?

A is dominant over B.O is dominant over A.A is dominant over O.B and A are co-dominantA is incompletely dominant over O.O is recessive to A and to B

F O is recessive to both A & B TTFT

Type of cell division shown

mitosis

Tell one reason why a cell woulddo this Grow organism bigger

Repair injuriesReplace worn out cells

What are the possible phenotypes of their offspring?

(% and color)

Black eyes (B) are dominant over red eyes (b) in rats.

Make a cross between two HETEROZYGOUS rats.

75 % black eyes 25% red eyes

B b

B b

BB Bb

Bb bb

Is it MITOSIS or MEIOSIS?

meiosis

Makes 2 daughter cells ______________

Makes haploid cells _______________

Divides twice but copies DNA once __________________

Used to repair injuries ______________

mitosis

meiosis

mitosis

A a

A

a

The genotype of the offspring in the blue box is _______ homozygous heterozygous

heterozygous

How many of the offspring from this cross will show the dominant characteristic?

¾ (75%) – AA and Aa

A cell which has 2 copies of every chromosome is called _____________diploid

OR 2n

Type of division that makes daughtercells which are different from the parent cell and different from each other

meiosis

Which of the following is NOT TRUE?

Genotype determines phenotype Alleles are different forms of the same gene. Genotype is the way the genes make you look. Organisms with different genotypes

can have the same phenotype.

T

T

F

T

Tt and TT both look tall

This diagram isshowing_________________

Crossing over

During which phase does this happen?

PROPHASE I of meiosis

BT bt bT Bt

What type of gametes can this organism produce?

BbTt

______ ______ _______ _______

What type of gametes can this organism produce?

BBTT

______ ______ _______ _______BT BT BT BT

The exchange of DNA between the chromatid arms on homologous pairs is called ________________Crossing over

The mixing up of maternal and paternal chromosomes as they move apart during anaphase I is called ______________Independent assortment

What genotype would a PURPLE dad have to be to make a yellow monster baby with a Purple (Pp) mom monster?

P p?

?

pp

Pp

Dad needs to have: a little p to give one to the baby a big P to be purple himself

An organism has the genotype Xy.

What are the possible sperm it can produce? ______ ______

THINK ABOUT IT:If females have an XX genotype and can only give X genes, which parent is the one that determines whether the baby is a boy or girl?

X y

Father ;The mother always gives an XIf the father gives a y, it’s a boy.If the father gives an X; it’s a girl.

G g

G GG Gg

g gg

G is dominant for green pods.g is recessive for yellow pods.

What is the genotype of the offspring in the shaded box?

Gg

What is the phenotype of the offspring in the shaded box?

Green pods


mitosis

Independent assortment_____________happens

Divides just once_______________

Testes and ovaries do it ____________

Makes cells identicalto parent cell __________________

meiosis

meiosis

mitosis


mitosis


Makes diploid cells _______________

Copies DNA every __________________time it divides

Used to make gametes ______________

Meiosis

mitosis

meiosis

This spot that holds the 2 chromatid copies together is called a ______________________

centromere

The phase of the cell cyclein which cells grow and DNA gets replicated.

Interphase – G1, S and G2


meiosis

Makes 2n cells ______________

Crossing over happens _______________

Used when organisms __________________grow bigger

Used in sexual reproduction ___________

mitosis

mitosis

meiosis


meiosis


Makes haploid cells _______________

Divides twice but copies DNA once __________________

Used to repair injuries ______________

mitosis

meiosis

mitosis

Type of cell division shown

meiosis

Body organ where you would expect tosee the above happen

Ovary or testes

who is the “father of genetics”?

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