Question

maria is homozygous recessive for the trait. isaiah is heterozygous dominant for the trait. what would be the possible gametes for these parents?○ maria−t & t, isaiah−t & t○ maria−t & t, isaiah−t & t○ maria−t & t, isaiah−t & t○ maria−t & t, isaiah−t & twhich of the following would be a positive use of biotechnology for society?○ genetically modifying a crop so that it can grow with very little water○ genetically modifying a bacterial cell to be resistant to antibiotics○ biologically engineering a virus to transmit an extremely deadly disease○ using clone technology to create a human army of clones

Explanation:

First Question (Genetics)

Step1: Identify Maria's genotype

Maria is homozygous recessive, so her genotype is $tt$.

Step2: Determine Maria's gametes

Homozygous individuals produce identical gametes: $t$ and $t$.

Step3: Identify Isaiah's genotype

Isaiah is heterozygous dominant, so his genotype is $Tt$.

Step4: Determine Isaiah's gametes

Heterozygous individuals produce two distinct gametes: $T$ and $t$.

Genetically modifying crops to grow with minimal water addresses agricultural challenges like water scarcity, benefiting food security. The other options pose risks: antibiotic-resistant bacteria threaten public health, engineered deadly viruses are bioweapons, and human clone armies raise ethical/legal violations.

Answer:

Maria-t & t, Isaiah-T & t

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Second Question (Biotechnology)