The video tutorial explains how to use Punnett squares to predict the genetic outcomes of offspring from two heterozygous blue crewmates. It covers the basics of dominant and recessive traits, focusing on the difference between phenotype and genotype. The tutorial provides a step-by-step guide to filling out a Punnett square and interpreting the results, which show a 3:1 ratio of blue to purple offspring.

What is the purpose of using a Punnett square in genetics?

• To identify the genetic disorders in an organism

• To calculate the age of an organism

• To predict the probability of offspring inheriting certain traits

• To determine the physical appearance of an organism

What does the prefix 'hetero' in heterozygous mean?

• Dominant

• Different

• Recessive

• Same

How are dominant and recessive traits represented in genetic notation?

• Dominant by lowercase, recessive by capital

• Dominant by capital, recessive by lowercase

• Both by capital letters

• Both by lowercase letters

What are the genetic alleles of two heterozygous blue crewmates?

• BB and Bb

• Bb and Bb

• BB and bb

• bb and Bb

Where do you place the genetic alleles of the parents in a Punnett square?

• On the top and left side

• On the top and right side

• On the bottom and right side

• On the bottom and left side

What is the purpose of moving the factors in a Punnett square?

• To identify genetic disorders

• To determine the age of the offspring

• To see the probability of the offspring's traits

• To calculate the number of offspring

How many blue and purple crewmates are there among the offspring?

• Two blue, two purple

• Three blue, one purple

• Four blue, zero purple

• One blue, three purple

Tags

NGSS.MS-LS3-2

What does phenotype refer to?

• The genetic makeup of an organism

• The number of offspring

• The age of an organism

• The physical appearance of an organism

Tags

NGSS.MS-LS1-4

What is the ratio of blue to purple crewmates in the offspring?

• 4:0

• 2:2

• 1:1

• 3:1

Tags

NGSS.MS-LS3-2

What is the difference between phenotype and genotype?

• Both refer to the physical appearance

• Phenotype is the genetic makeup, genotype is the physical appearance

• Phenotype is the physical appearance, genotype is the genetic makeup

• Both refer to the genetic makeup