Genetics and Living things

Fill in the blanks with the correct label.

e

f

g

h

d

Parents Alleles

50% Homozygous genotype

Recessive Allele

50% Heterozygous genotype

Phenotype

Parents gamets

Dominant Allele

Genotype

Do the cross

b

c

AA

aa

Aa

Tags

NGSS.MS-LS3-2

The ​dominant ​ (a)   for purple flowers is ​ (b)   and the ​ (c)   allele is ​ (d)   for white flowers.

• allele
• P
• recessive
• p
• dominant
• PP
• pp

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The ​dominant ​ allele for purple flowers is ​ P and the ​ recessive allele is ​ p for white flowers. The probability for offspring to show the phenotype purple is ​ (a)   and ​ (b)   white. And the probability of getting the genotype dominant homozygous is ​ (c)   , heterozygous ​ (d)   , recessive homozygous is ​ (e)   .

• 75%
• 25%
• 50%
• 30%
• 10%
• 80%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Scientists discuss and debate experimental results and possible explanations in studying phenomena. Which best explains why scientists debate while searching for explanations?

• because debating helps scientists focus on empirical evidence, analyzing both the strengths and weaknesses of the evidence
• because debating helps the scientific community to present interesting and exciting science to the public
• because debating gives scientists an opportunity to express their feelings and opinions about the subject
• because every scientist wants to find an accurate explanation and disprove others’ explanations

Tags

NGSS.MS-PS2-4

A sequence of DNA that determines a trait and is passed from parent to offspring.

• Gene

• Allele

• Trait

Tags

NGSS.HS-LS3-1

A threadlike structure within a cell’s nucleus that contains DNA that is passed from one generation to the next.

• Chromosome

• Chromatid

• Allele

Tags

NGSS.MS-LS3-1

In this food web, the grass is ​ (a)   ​ grasshopper is a ​ (b)   ​who gets its energy by eating the grass, then the frog and the bird have the role of ​ (c)   . In this food web energy transfers until it reaches the top consumer which is the ​ (d)   .

• primary producer
• primary consumer
• secondary consumers
• hawk
• rabbit
• mouse

Tags

NGSS.MS-LS2-3