Genetics

Select all of the following genotypes that are considered Homozygous.

• AA

• bb

• Hh

• Dd

• zz

Red flowers (R) are dominant over white flowers (r). Select the genotypes that would produce red flowers.

• RR

• Rr

• rr

• Rw

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Gregor Mendel conducted many experiments on pea plants and set the foundation for genetics. Select all of the following concepts that Mendel discovered during his studies.

• Mendel determined that some traits were dominant and would cover up other recessive traits.

• Mendel determined that genotypes could be heterozygous or homozygous.

• Mendel determined that one allele was given from each parent plant to its offspring.

• Mendel used Punnett Squares to determine the specific genotype, phenotype, and number of plants for each offspring.

If T=Tall & t=short, what is the genotypic ratio?

• 1:3
• 3:1
• 1:2:1
• 2:2

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Alternant or different genes that code for the same trait are called?

• chromosomes

• segments

• alleles.

• homozygous.

If something is heterozygous, it is also _____

• purebred

• hybrid

• dominant

• recessive

In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?

• It is BB.
• It is Bb
• It is brown
• It is bb.

Tags

NGSS.HS-LS3-1

Having two different genes for a trait is called

• homozygous

• heterozygous

• protein

• genotype

Mendel's law of segregation states that during meiosis, the alleles that control each trait separate, and only _________________ from each pair is/are passed to the offspring

• one allele
• the dominant trait
• two alleles
• the recessive trait

Tags

NGSS.HS-LS3-1

If something is homozygous, it can also be called____

• phenotype

• genotype

• hybrid

• purebred