Copy of Mendelain Genetics Basic Review (5/28/2026)
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Last updated 20 days ago
15 questions
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Question 1
1.
In plants tall (T) is dominant to short (t). Two heterozygous tall plants (Tt) are crossed. Draw the Punnett Square below.
Question 2
2.
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)
Question 3
3.
In plants tall (T) is dominant to short (t). Two heterozygous tall plants (Tt) are crossed. What is the genotypic ratio?
Question 4
4.
In plants tall (T) is dominant to short (t). Two heterozygous tall plants (Tt) are crossed. What is the phenotypic ratio?
Question 5
5.
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 genotype for a homozygous round seed?
Question 6
6.
Round seeds (R) are dominant to wrinkled seeds (r). A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. Draw the Punnett Square.
Question 7
7.
Round seeds (R) are dominant to wrinkled seeds (r). A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What percent of the offspring will be round?
Question 8
8.
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?
Question 9
9.
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?
Question 10
10.
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.
Question 11
11.
In plants, pink and white flowers 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?
Question 12
12.
Question 13
13.
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Question 14
14.
Question 15
15.
In garden peas, green (G) is dominant to yellow (g). What cross produces 70% green pea plants and 30 % yellow pea plants?
GG x gg
Gg x Gg
Gg x gg
GG x GG
Match the vocabulary words
Codominance
2 of the same alleles
Phenotype
one dominant and one recessive allele
Homozygous
physical appearance
Incomplete Dominance
allele pairs
Heterozygous
the heterozygous condition is a blend
Genotype
two dominant alleles are expressed equally in the heterozygous condition
Another term for homozygous.
hybrid
purebred
Two pea plants were crossed. The 45% of the offspring were short and 55% were tall. What was the genotypes of the parents?