LE 12.1 Homework

For each missing word or phrase, circle the choice that correctly completes the sentence.

Mendel worked with pea plants, which are usually (cross-pollinating / self-pollinating). When he transferred pollen from one pea plant to another, he was (cross-pollinating / self-pollinating) the pea plants to (fertilize / segregate) the eggs and form embryos within a seed.

• Cross pollinating, cross pollinating, fertilize

• Cross pollinating, self-pollinating, segregate

• Self pollinating, cross pollinating, fertilize

• Self pollinating, cross pollinating, segregate

Tags

NGSS.MS-LS3-2

Different forms of genes are called...

• hybrids

• dominant factors

• alleles

• recessive factors

Which of these is false?

• Performing a cross to produce a F1 generation can be used to show if an allele is dominant

• The F1 generation is always a hybrid

• An F1 cross produces a F2 generation

• All of the offspring of a cross must exhibit the same trait

How was Mendel able to keep his cross pollinated plants from self pollinating?

• He sprayed them with herbicide

• He add his own pollen

• He was not able to keep them from self pollinating

• He removed the pollen producing male parts

How are traits passed on?

• Alleles can be dominant or recessive

• Genes control traits

• Alleles can be passed on

• All of the other answers are correct

Tags

NGSS.MS-LS3-2