monohybrid cross

In watermelons, green rinds (G) are dominant to striped rinds (g).  What is the genotype of a heterozygous green watermelon?

• GG
• Gg
• gg
• green

Tags

NGSS.HS-LS3-1

In cacti, long arms (A) are dominant to short arms (a).  Suppose 2 heterozygous cacti are crossed.  What percentage of their offspring are expected to have short arms?

• 0%
• 25%
• 75%
• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

One of the two forms of a gene is called a(n)

• genotype
• allele
• hybrid
• trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

When a person has two different alleles for a gene, they are said to be

• heterozygous
• homozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A __________ allele always shows up in an organism when the it is present.

• dominant
• hybrid

Tags

NGSS.HS-LS3-1

In this example, the child displays the ________ trait.

• dominant
• recessive 

Tags

NGSS.HS-LS3-1

How many alleles (letters) do each person carry for a trait?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-LS3-1

An allele (T) for tongue-rolling is dominant over non-tongue rolling. What would be the genotypes of both parents if all of the offspring in the F1 generation are non-tongue rolling?

• TT X Tt

• Tt X tt

• tt X tt

• TT X tt

Tags

NGSS.HS-LS3-1

In garden pea plant, long stem is dominant over short stem. How many percent will be short stem garden pea plants that may appear in the first filial generation if both parents are heterozygous for the given trait?

• 25% short stem pea plant

• 50% short stem pea plant

• 75% short stem pea plant

• 100% short stem pea plant

Who is the father of genetics?