Cellular Genetics and Heredity

What is the difference between a gene and an allele?

• Allele is a different form of gene

• Allele is a same form of gene

• Both

What is the difference between chromosome and gene?

• Gene is a part from chromosome

• They are the same

In a certain species of plant the color Red(R) is dominant and the color white(r) is recessive, what is the probability of an offspring being white?

• 0

• 1

• 2

• 3

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What are genotypes?

• The allele combination for a trait (Ex; Tt, TT, tt)

• The physical appearance of an organism (Ex; short, tall)

• They are another word for chromosomes.

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How many chromosomes can be found in a normal human body?

• 55

• 86

• 46

• 23

What is Mendel's first law of genetics and heredity, and what does it mean?

• The Law of Segregation - every living organism has two alleles of each gene, and when gametes are created, the alleles separate.

• Punnet Squares - It means before doing anything with science, you must calculate the square root of 50.

• The Law Of Independent Assortement - Sort genes into the correct chromosome independently.

• Gregor Mendel - Gregor Mendel was commonly known as the father or Genetics.

What is heredity?

• Heredity is the passing on of certain characteristics or traits from parents to offsrping.

• Heredity is Gregor Mendel's favorite food, which became very popular around the 1800s.

• Heredity is the scientific word for a hybrid.

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What does "true-breeding" mean in genetics?

• It means the genotype is homozygous dominant (TT) or homozygous recessive (tt).

• It means the F1 generation is only female, and the F2 generation is only male.

• It means that the genotype is heterozygous (Tt).

• It means the couple will have a child which looks exactly like the father.

Tags

NGSS.HS-LS3-1

Brandon is homozygous dominant for brown eyes. He marries a girl named Shelly, who is homozygous recessive for blue eyes. If brown eyes are dominant, and blue eyes are recessive, what will their children look like?

• All their children will have blue eyes outlined with brown.

• All their children wil have brown eyes.

• All their children will have blue eyes.

• Their children will have hazel eyes.

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What is Mendel's 2nd law of heredity?

• Law of Independent Assortment - genes for different traits and inherited independently of eachother.

• Law of Segregation - Genotypes always code for a person to be tall.

• Law Of Genderous - A female has the 23rd chromosome XX and males have XY, though in some genetic disorders, it can end up as X for a female or XXY for a male.

Answer explanation

It is the Law of Independent Assortment. Different genes are inherited independlty of eachother, which means that if you are short, you don't NECCESSARILY have blue eyes. For example, pretend you inherit the "short" trait from your mother, but you do not inherit the "blue eyes" trait from her. That is because these genes are inherited independtly from eachother, or ASSORTED INDEPENDENTLY.