Which of the following Punnett squares is correct?

Identical twins have identical genotypes and, at birth, their epigenetic patterns are similar to each other. What happens to these epigenetic patterns as the twins age?

An individual with blood type AB- can receive blood from which blood types?

The idea that for any particular trait, the pair of alleles of each parent separate and only one allele from each parent passes to an offspring is Mendel’s principle of:

You start with a true breeding blue flower and a true breeding yellow flower. You cross the two and observe the the F1 offspring. All of them have blue flowers with yellow stripes. What is the dominant PHENOTYPE in this cross?

An individual with blood type O+ can donate blood to people with which blood types?

What are some of the reasons behind Mendel choosing pea plants as his model system? You need at least three reasons for full credit.

When the genotype consists of a dominant and a recessive allele, the phenotype will be the _________________ trait.

What are the gamete combinations for an individual with a dark tan skin color that corresponds to the genotype of AaBBCc? (Hint: You should have eight total listed individually.)

In a mating between two individuals that are heterozygous for a recessive lethal allele that is expressed in the womb, what genotypic ratio (homozygous dominant:heterozygous:homozygous recessive) would you expect to observe in the offspring?