Biology

The same gene can come in different versions, the different versions of a gene are called

(a)  

• Alleles
• Chromosomes
• Traits

Different traits are inherited independently of each other

• Law of independent assortment

• Genetics law

If bushy black eyebrows are dominant to thin black eyebrows, draw the eyebrows this person will have if his genotype is EE

Tags

NGSS.HS-LS3-1

If curly hair is dominant to straight hair, draw someone with genotype hh

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Segments of DNA that code for traits are called ....

• genes

• proteins

• alleles

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Cross 2 heterozygous tall pea plants. Tall (T) is dominant to short (t). What fraction of the offspring do you predict will be tall?

• 1/4

• 2/4

• 3/4

• 4/4

Tags

NGSS.HS-LS3-3

In a population of bees, long wings (L) are dominant over short wings (l).  Bees with long wings are ...

• heterozygous only (Ll)

• homozygous 

  dominant only (LL)

• heterozygous or 

  homozygous 

  dominant (LL or Ll)

Tags

NGSS.HS-LS3-2

In guinea pigs, the allele for rough coat (R) is dominant over the allele for smooth coat (r).  A homozygous dominant guinea pig and a homozygous recessive guinea pig are mated.

What would be the phenotype of the offspring?

• 100% rough coat

• 100% smooth coat

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In pea plants, the trait for tall stems is dominant over the trait for short stems. If two heterozygous tall plants are crossed, what percentage of the offspring would be expected to have the same phenotype as the parents?

• 100%
• 75%
• 50%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

In snapdragons, Tallness (T) is dominant to dwarfness (t). In a cross between two plants that are homozygous for the recessive allele, the percent of offspring expected to exhibit tallness is

•  25%
•  75%
• 100%
• 0%

Tags

NGSS.HS-LS3-1