Genetics Basic Review

Last updated over 1 year ago
15 questions
Note from the author:
monohybrid crosses
1

In plants tall (T) is dominant to short (t). Two heterozygous tall plants (Tt) are crossed. Draw the Punnett Square below.

1

In plants tall (T) is dominant to short (t). Two heterozygous tall plants (Tt) are crossed. What percent of the offspring will be tall? (see your cross from #1)

1

In plants tall (T) is dominant to short (t). Two heterozygous tall plants (Tt) are crossed. What is the genotypic ratio? (see your cross from #1)

1

In plants tall (T) is dominant to short (t). Two heterozygous tall plants (Tt) are crossed. What is the phenotypic ratio? (see your cross from #1)

1

Round seeds (R) are dominant to wrinkled seeds (r). What is the genotype for a homozygous dominant round seed?

1

Round seeds (R) are dominant to wrinkled seeds (r). A homozygous dominant round seeded plant is crossed with a homozygous recessive wrinkled seeded plant. Draw the Punnett Square.

1

Round seeds (R) are dominant to wrinkled seeds (r). A homozygous dominant round seeded plant is crossed with a homozygous recessive wrinkled seeded plant. What percent of the offspring will be round? (see your cross from #6)

1

Round seeds (R) are dominant to wrinkled seeds (r). A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What is the genotypic ratio? (see your cross from #6)

1

Round seeds (R) are dominant to wrinkled seeds (r). A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What is the phenotypic ratio? (see your cross from #6)

1

In plants, pink and white flowers are codominant. A white (WW) flowered plant is crossed with a heterozygous pink and white (PW) flower. Draw the Punnett Square.

1

In plants, pink (P) and white flowers (W) are codominant. A white (WW) flowered plant is crossed with a heterozygous pink and white (PW) flower. What percent of the flowers will be pink? (see your cross from #10)

1

In garden peas, green (G) is dominant to yellow (g). What cross produces 70% green pea plants and 30 % yellow pea plants?

6

Match the vocabulary words

Draggable itemCorresponding Item
Codominance
2 of the same alleles
Incomplete Dominance
one dominant and one recessive allele
Homozygous
physical appearance
Heterozygous
allele pairs
Genotype
the heterozygous condition is a blend
Phenotype
two dominant alleles are expressed equally in the heterozygous condition
1

Another term for homozygous.

1

Two pea plants were crossed. The 45% of the offspring were short and 55% were tall. What was the genotypes of the parents?