Dihybrid Crosses

Dihybrid Crosses

Assessment

Flashcard

Biology

9th Grade

Practice Problem

Hard

Created by

Wayground Content

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a dihybrid cross?

Back

A genetic cross between individuals that examines the inheritance of two different traits, each controlled by different genes.

2.

FLASHCARD QUESTION

Front

What does the term 'homozygous' mean?

Back

An organism with two identical alleles for a particular trait (e.g., RR or rr).

3.

FLASHCARD QUESTION

Front

What does the term 'heterozygous' mean?

Back

An organism with two different alleles for a particular trait (e.g., Rr).

4.

FLASHCARD QUESTION

Front

What is the genotype for a pea plant heterozygous for round seeds (R) and homozygous recessive for green seeds (y)?

Back

Rryy

5.

FLASHCARD QUESTION

Front

In a dihybrid cross, what is the phenotypic ratio for the offspring?

Back

9:3:3:1 ratio for dominant and recessive traits.

6.

FLASHCARD QUESTION

Front

What is the genotype for a pea plant homozygous for round seeds (R) and heterozygous for yellow seeds?

Back

RRYy

7.

FLASHCARD QUESTION

Front

What is the probability of obtaining a homozygous recessive offspring from a cross between two heterozygous parents (Rr x Rr)?

Back

25%.

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