FLASHCARDS Punnett Squares and Pedigree Charts

FLASHCARDS Punnett Squares and Pedigree Charts

Assessment

Flashcard

Science

6th - 8th Grade

Medium

Created by

Gladymar Maldonado

Used 3+ times

FREE Resource

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20 questions

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1.

FLASHCARD QUESTION

Front

T - tall and t = short In the punnett square below, what belongs in the missing square?

Back

tt

Answer explanation

In the Punnett square, the combination of two short alleles (tt) results in a short phenotype. Since both parents contribute a 't', the missing square must be 'tt', indicating both alleles are short.

2.

FLASHCARD QUESTION

Front

Genotype for a yellow plant (G = green, g = yellow)

Back

gg

Answer explanation

The genotype for a yellow plant is 'gg' because yellow is represented by the recessive allele 'g'. The dominant allele 'G' produces green plants, so only 'gg' results in yellow.

3.

FLASHCARD QUESTION

Front

B = brown fur b = white fur In the punnett square, what is the probability for white fur?

Back

50%

Answer explanation

In a Punnett square for a cross between brown (B) and white (b) fur, the possible genotypes are BB, Bb, Bb, and bb. The white fur genotype (bb) appears once out of four, giving a probability of 50% for white fur.

4.

FLASHCARD QUESTION

Front

Aa, DD, bB, yy are all examples of

Back

genotypes

Answer explanation

Aa, DD, bB, and yy represent combinations of alleles, which define the genetic makeup of an organism. Therefore, they are examples of genotypes, not phenotypes, which refer to observable traits.

5.

FLASHCARD QUESTION

Front

What you see, or the physical appearance.

Back

Phenotype

Answer explanation

The term 'phenotype' refers to the observable physical appearance of an organism, which aligns with the description given in the question. 'Homozygous' relates to genetic makeup, not appearance.

6.

FLASHCARD QUESTION

Front

AA and Aa always show up as

Back

dominant

Answer explanation

AA and Aa both contain at least one dominant allele (A), which is why they always show up as dominant in phenotypic expression.

7.

FLASHCARD QUESTION

Front

Each one of the boxes on the Punnett Square represents what probability of an offspring's genotype?

Back

25%

Answer explanation

Each box in a Punnett Square represents a possible genotype of the offspring. With two heterozygous parents, there are four combinations, making the probability of each genotype 25%.

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